Computer fix , it-yourself .

( Daquan will regret not seeing )

; ; ; ; 1: motherboard failure
2: Graphics fault
3: sound card difficulty
4: hard disk failure
5: Memory Fault
6: drive failure
7: mouse malfunction
8: Keyboard failure
9: MODEM failure
10: printer problems
11: Display fault
12: recorder Fault
13: Scanner failure
14: display jitter causes
15: Troubleshooting BIOS settings
16: Restart the computer failure
17: CPU utilization is too high to resolve the problem
18 : find and repair hard disk bad sectors
19: page manual processing of spiteful code
20: Common Faults and integrated sound solution
21: USB storage device does not recognize
22: black failure
23: WINDOWS blue screen code lookup tables
24: WINDOWS Error Code Complete
25: BIOS self-test and boot failure problems are related to the following breakdown
Quick and the computer appears to solve the problem

The cause of the malfunction confusing, elusive. And the components of the Windows operating system is relatively intricate, computer event of a failure, for the average user, you ambition to pinpoint the reasons for its failure is about impossible. So it is that if we meet when the computer failure, completely helpless out? This is not so, the computer-generated notwithstanding there are many reasons for failure, but if we look carefully, conscientiously amount up, we can still have some computer failures of the decree and treatment approaches. In this pamphlet, we will some of the most common and most typical computer fault diagnosis, maintenance methods to show you, through it, you'll find - ways to solve computer failure on your side, simple, but forcible!


one motherboard motherboard

key component of the entire microprocessor, the computer activities a vital character. If the motherboard breakdown will affect the work of the entire PC computer system. Here, we take a see at the motherboard in the lesson of which the most common faults.

a common fault: boot no display no display

computer boots, the first object to check is a BIOS. Motherboard BIOS, the hardware cache major data, while the motherboard BIOS is portion of the more vulnerable, easily damaged, once damaged it will cause the system can not scamper, the recurrence of such failures are generally due to the motherboard BIOS damage caused by CIH virus (of course not rule out the motherboard itself, cause a system failure can not escape..) General BIOS hard drive after the virus demolished the data will be lost, so we can detect the hard disk the data is intact to determine whether the BIOS is damaged, if the hard disk data intact, so there are three reasons why the phenomenon of power no display:

1. because the motherboard or expansion card expansion slot problems, leadership to plug in expansion card, such as sound cards, etc. without the display board is not responding.

2. motherboard jumper settings in the CMOS in the CPU frequency does not, it may lead to not show fault, which, at the peak of the clear CMOS to be addressed. Clear CMOS jumper on the motherboard usually near the lithium power cell, the default position is generally 1,2 short, equitable short of his conversion to jump a few seconds for the 2,3 to solve the problem, the old motherboard for the past can not be found should the user to the jumper, just remove the battery, enter the CMOS settings to be displayed after the boot off, will go up also reached the CMOS battery expel purposes.

3. motherboard does not acknowledge the memory, memory corruption or memory does not match the boot no display can lead to failure. More selective in some older motherboards memory, once the plug in the motherboard does not recognize the memory, the motherboard will not begin, and even some motherboards do not give you whichever fault tips (tweet). Of course sometimes in order to inflate the memory to improve system performance, the results of different plug brands, types of memory can also cause such a failure occurs, so maintenance should disburse more consideration.


for the failure of the motherboard BIOS is damaged, we can plug in the ISA card to see whether the display (If prompted, can prompt steps below.), if I were you the boot screen, you can own Automatic Updates BIOS to do a floppy disk, reload the BIOS, but some motherboard BIOS is damaged, the floppy drive did not work this time, try using hot method to solve (I have tried, by the time the BIOS the same at the same level of motherboards can be successful writer..) However, in addition need to use the same BIOS hot things, some components may cause damage to the motherboard, so a reliable method is to write code using the BIOS update file to write device inside the BIOS (this service can find a safer computer vendjust aboutlution).

Troubleshooting II: CMOS settings can not be saved
such failures are generally due to not enough battery voltage caused by the motherboard, which can be replaced, but some board battery replacement also can not solve the problem, at this time There are two possibilities:

1. motherboard circuit problems, which are looking for vocational service;

2. motherboard CMOS jumper problem, sometimes because of the error will jump on the motherboard CMOS line is set to clear the option, or set to an external battery, making the CMOS data can not be saved.

Fault Three: In Windows, install the motherboard driver CD-ROM drive read the disk after a crash or cut corners the phenomenon

in some no-name motherboard sometimes such a phenomenon, motherboard drivers procedures Bahrain, can not restart the computer into the Windows 98 desktop, normal mode, and the driver under Windows 98 can not be uninstalled. If this occurs, it is recommended to re-find the latest drivers installed, the problem can be solved generally, if it is not, can only re-install the system.

Troubleshooting four: Install the Windows or start Windows when the mouse is not available

software such failure occurred because the error is generally caused by the CMOS settings. Power treatment settings in the CMOS has a modem use IRQ field projects, and his options are 3,4,5 ......, NA, generally it is the default option is 3, set it to 3 other than items can be intervened.

five common faults: prevalent computer crashes, during the CMOS settings will arise the phenomenon of death

Dead phenomenon occurred in CMOS, usually the motherboard or CPU have problems, should the press law can not troubleshooting, it can only replace the motherboard or CPU.

recurrence of such failures are generally due to a problem with the motherboard or the motherboard designs Cache heat caused by bad, I had found in the 815EP motherboard is not good enough for the motherboard heat caused by the failure phenomenon. Touch the CPU after the crash approximately the motherboard components, found that the temperature is quite hot. After replacing the high-power fan, crash failures can be resolved.

Troubleshooting Six: board COM port or parallel port, IDE port failure

the recurrence of such failures are generally due to causes associated hardware hot plug the user, the user can use this time instead of multi-function card But in lieu must be deterred before the COM port on the motherboard comes with the parallel port (some motherboards with IDE ports to be banned for appropriate use.)
graphics
a common fault: shoe no display

such failures are generally due to poor contact with the motherboard or graphics slot motherboard causing problems. Fknow next to nothing ofme integrated graphics motherboard, chief memory if the shared memory, you need to pay attention to the location of memory, usually in the first memory slot should be inserted in memory. Causes the graphics card no display power failure, power is generally given after a long, two short beeps (AWARD BIOS for the card is concerned).

Fault Two: Show Huaping, blind to the handwriting

such failures are generally due to high-resolution monitor or video card does not support caused. Huaping startup mode can be switched to safe mode, and then again in Windows 98 into the display settings, select the state in 16 colors Restart in normal mode Windows 98 system, delete the graphics drivers,PULSERA TRANSPARENTE CON FRANCIA, restart the computer. Or not to enter safe mode, in a pure DOS environment, edit
SYSTEM.INI file, display.drv = pnpdrver to display.drv = vga.drv, the Save and exit,PULSERA CAMUFLAJE CON LOGO XB, then drive in Windows to update the
program.

3 common fault: color display is not regular, such failures are generally the following reasons:
1. graphics card and monitor signal line is bad
2. display their own fault
3. In Some software to run when the color is not normal, usually common in older machines, there is a check in the BIOS, the color of the option to open it to
4. Graphics damage;
5. display is magnetized Such phenomenon is generally due to magnetic objects can be caused by also close, magnetized may also cause the display appears deflection phenomenon.

Fault IV: Death

more common in the recurrence of such failures are generally not compatible with the motherboard and graphics card or motherboard and graphics card is bad; graphics card is not compatible with other expansion cards can also cause crashes.

five common faults: the screen pattern of irregular noise or

such failures are generally due to problems with memory or graphics cards caused by poor adjoin with the motherboard. Finger position to be clean or replace the graphics card was
card.

six common faults: lost

graphics driver graphics driver to load and run automatically after a period of loss of driver, such failures are generally of poor quality due to movie card or graphics card and motherboard do not compatible, production the graphics card temperature is too high, causing the system to run unstable or freezes, then only replace the graphics card.

adding, there namely a class of special circumstances, the previous graphics driver to load, merely the graphics drivers fraught into Windows when the break occurred. To alteration to other types of cards in loading its driver, insert the antique card to be addressed. Should such a failure can not be determined, then the registry failure to reinstate the registry or reinstall the operating system can be. A mutual fault

sound: sound speechless. There are common causes of this failure:

1. Default output driver is Click the sound icon bottom right turn of the screen (small loudspeaker), appear to adjust the volume slider below the

2. soundcard collide with other cards. PnP card solution is used to modify system resources so namely all cards without afflicting every other. Sometimes, open the

3. After installing the Direct X sound card is not aloud. That this sound card with Direct X compatibility is not agreeable, need to update the driver.

4. one channel silent. Check the sound card to the audio speaker cable is disconnected.

two common faults: excessive noise from the sound card. There are common causes of this failure:

1. Card is not correct. Manufacturing precision is not high enough because the chassis, sound card manufacturer or installed appearance the damper caused by bad sound card can not be closely integrated with the motherboard expansion slots, can be seen visually on the card This phenomenon in the ISA card or PCI card has, are common problems. Pliers generally available improvement.

2. Active Speaker Speaker input connected to the sound card output. For the lively speaker, should be connected to sound card Line out side, it has not been
output whistle amplifier on the card, the rumpus is many smaller. There is only an output card is the Speaker or Line out jumpers on the card depends on the decision, the plant default is constantly Speaker, so the jumper to loosen the sound card.

3. Windows comes with a bad driver. Sound card driver is installed, you should choose the account carton. If you have installed the Windows driver that comes with the optional Installation. Then insert the disk or CD-ROM with sound card, load the driver catered by the contractor.

Fault Three: Sound can not I once had a sound card under Windows 98 using the original driver disk to install the driver install does not stuff how, and had to replace the use of Creative SB16 driver, everything is normal. Then upgrade to Windows Me, not normal and back with Windows 2000 (full edition) comes with just the normal sound card drivers.

2.'s most vexing problems than the Windows 9X Plug and Play device under test has chosen to given a free hand to assist you install the driver, the driver side is not used, then, each time you cancel out reloading will reiterate this, and can not use the Here I reveal a mysterious detached trick: Go to Win9xinfother catalogue, the *. inf file on the sound card, erase all and restart manually after installation, this was one hundred percentage efficacious, have saved countless lives ... ... of course, sound card, change up table can accomplish the same purpose.

3. does not support the PnP sound card installed (also applies to not use the PnP install the PnP sound card): Go to Windows search for new hardware?

Troubleshooting four: Play CD silent


1. completely silent. With Windows 98's Using a 4-pin CD-ROM audio cable to connect the analog audio output and CD-in on the card can be, this line will purchase CD-ROM embodied.

2. there is only one channel sound. Optical output signal generally approximately two lines, the navel two lines to floor. Because the audio signal line 4 line color is generally different, can be found from the color of the line correspond to the interface. If only one interface hardly everund card and audio cable for each interface does not match the cabling had to change the order of the audio line, usually only one of two lines of the change can be.

five common faults: PCI sound card

sonic rumble occurs generally because PCI video card technology caused by Bus Master PCI bus hung on the hard disk read and write, mouse movements and other operations to distend the backdrop
noise's sake. Solution: Turn off the Bus Master PCI card traits into AGP graphics card, sound card for the PCI slot.

six common faults: not the normal logging

first check if there is naught wrong with the loudspeaker jack into the other, and second, double-click the little spokesman, select menu see if the settings are correct. Then in the If the

seven common faults: Can not Play Wav's, Midi Wav Music

can not play melody phenomenon is infrequent, often due to One can weaken; can not play MIDI files may have the following 3 possible:

1. Early ISA sound card 16-bit mode may be due to 32-bit mode is not compatible with the MIDI playback is not caused by the normal, by installing Software wave table
way should resolve

2. Today, most of the popular PCI sound card with wavetable synthesis technology, if the MIDI playback is not part of it is probable because you do not load the appropriate sound wave table library.

3. Windows volume control in the MIDI outlet is set to silent mode.

eight common faults: PCI sound card to use in the WIN98

Some users do not normally reflected in the sound card driver installation process anything is normal, no device conflicts occur, but the following is not in WIN98 aloud, or cause other problems. This phenomenon usually occurs in the PCI sound card, please check the installation process your PCI sound card inserted in the article which PCI slot. Thermal considerations for some friends, like to linger away from the sound card plugged into the AGP slot, near the ISA slot that several PCI slots. The problem often arises here, because there is a Windows98 Bug: sometimes only correctly identified and inserted in the PCI-1 PCI-2 sound card two slots. ATX motherboard in the two next to AGP is the PCI-1 PCI and PCI-2 (the inverse in some ATX motherboard, close to the ISA is the PCI-1), so if you do not have the PCI sound card installed in the correct slot, the problem would be built.
memory


computer memory is one of the most important parts, and its role in mistrust, then the memory what are the most common faults it?

a common fault: no display

boot memory because the recurrence of such failures are generally due to memory with the motherboard memory slot is bad cause, at a time tarnish his finger back and along with the eraser position to solve the problem (Do not use alcohol and other cleaning), there is memory corruption or a problem with the motherboard memory slot can also cause such a failure.
memory causes the boot no display failure, the host speaker beep usually for a long time (for the Award Bios is cared).

Troubleshooting II: Windows Registry damage often for no reason, prompted for a user to regain

such as memory failures are generally caused by poor quality, it is difficult to repair, replace only one way .

three common faults: Windows often automatically enter safe mode

such failures are generally due to the motherboard is not compatible with the memories or memories caused by meager quality, common in high-frequency memories for Some do not support this frequency of memory on the motherboard, you can attempt to dwindle the memory within the CMOS settings to see whether the read speed to solve the problem, should not, it can only replace the memory.

Fault IV: promiscuous crashes

such failures are generally due to the option of several different memory chips, due to the memory of different speeds to produce a time distinction resulting in death
machine, which can reduce the memory speed CMOS settings to be resolved within, otherwise, the only way to use the same type of memory. Another likelihood is that memory is not compatible with the motherboard, these phenomena generally rare, the other is also likely that poor contact with the motherboard memory computer random crashes caused. 01

five common faults: memory to mushroom system resources, but decreased after the

such phenomena are generally not compatible with the motherboard and memory caused the high frequency of memory usually found in memory fall butme does not support this frequency of memory on the motherboard, such a failure when you try to COMS memory speed will be set too low a little try.

6 common faults: some software often runs out of memory hints

This phenomenon is usually due to inadequate system disk space left, you can delete some useless files, leaving some space that is can be generally retained at
300M or so.

Fault Seven: Install Windows to boot from the hard drive to detect disk space, memory

prompted such failures are generally due to the user in the config.sys file, join the emm386.exe file, as long as it disguised problems can be solved. CD-ROM drive is

computer hardware components in one of the shortest life. In truth, many scrap the drive there is still much of value, just click on it a little maintenance. This often do not have any profound learning of radio, do not need anything too difficult to use the repair tools and materials. Just look carefully and with reference to the implementation of the following omens of some troubleshooting, I deem you can restore the old drive or the old

a common failure: hard disk steer light is always flashing go

This is an illusion, it is not. Because of the hard disk light flashes and the hard disk drive with an IDE interface connected,Extreme Balance, the record also control the hard work the results of light. Drive unit can be chained to a single IDE interface.

Fault Two: In the Windows environment to operate above the CD-ROM to display ROM to a certain extent. Most CD-ROM connected to the IDE hard disk interface is not supported
Windows 32-bit disk way, the Windows generated an internal error crash. After entering Windows, the check box is closed, the confirm, then restart Windows, in Windows, and then access the CD-ROM will not go into error.

Fault Three: drive can not properly read the disk, displayed on the screen: ?

In this circumstance, the virus should be detected by antivirus software on the machine to check anti-virus, the virus can not find the file if the redactor to open C under the root directory of the CONFIG.SYS if they put up light drivers and drivers are broken, and processing,Equilibrio Xtreme, but also with a txt amending software View No issues were found more than two steps, removable drive maintenance.

Troubleshooting four: drive to use when prompted to read and jot errors or diskless

this phenomenon mostly in the changer Shihai No place to operate on the drive caused by the fault. for all the operations drive will need to await for the CD like the morsel when the indicator shows the action can be behaved. In Play DVD when the time should also be transferred to naught and then changer, which can lest the upon error.

5 common faults: when playing VCD movies cease or broken screen phenomenon

check the AUTOEXEC.BAT file on MSCDEX.EXE after. If so, you should put
SMARTDRV expression prior to the MSCDEX.EXE; Party not to use high-speed CD-ROM rushed process to SMARTDRV.EXE / U; failure can be ruled out.

Troubleshooting Six: CD-ROM in the read file, read and sometimes not, and the longer the time to read the disk drive

not read the disk hardware failure focused on the laser head assembly, and can be divided into two kinds: one is caused by using long laser tube of the old
; the other is the photocell lens surface is dirty or dirty and displacement of the laser tube deformation. So the power to adjust the laser tube, the need of optical lens tube and the laser tube cleaning.

photoelectric tubes and focusing lens cleaning means is: Disconnect the laser head assembly,PULSERA BLANCA CON BANDERA USA, a smooth cable, memorize the way of the laser head teams separately pieces. then see hooded jacket laser focusing lens, remove the jacket will find that focusing lens from the four nice copper wire connected to the focus, tracing the roll, the optical tube assembly is installed in the bottom of the lens holes in the. with a fine wire wrapped in clean cotton mallet a small sum of distilled water (not optical tube with an alcohol erase and focusing lens surface), and to see whether the level of the lens on the laser tube is suspended, it shall be adjusted suitably. Thus, the cleaning is completed.

adjust the laser power. in the side of the laser head assembly screws are a little like a cross potentiometer. the use of color and write the initial position, generally the first clockwise 5 ° ~ 10 °, installed No re-test machine rotate 5 ° ~ 10 °, until a flat read the disk. Note must not swivel too much, so much power and flamed photocell.

seven common faults: boot drive not detectedThe data cable connector is lax, and if found not plugged in, it will be re-plugged, plug tight. If this does not resolve the fault, we recruited a new data can be put on line to try. this time if the fault still exist, we need to check the jumper settings CD-ROM, and if there is an error, change it to.
mouse mouse
failure inquiry and maintenance is relatively uncomplicated, maximum of the fault because the interface or opener contacts bad, broken,PULSERA AZUL CON BANDERA, sordid mechanical positioning system. a few failures for the interior components or circle Weld mouse, which are found in decisive low-quality products, primarily in the light-emitting diode, IC circuit break to the bulk.

A common fault: can not find the mouse

1. mouse completely damaged and need replacement mouse.
2. connected to the host reg code wharf or mouse PS / 2 oral exposure bad, carefully take a good line, re- can start.
3. motherboard reg code or PS / 2 ports from getting damaged, this situation is rare, if this is the case, had to replace a motherboard or use a serial port on a multifunction card.
4 . mouse line is bad, this is the most common. bad points more in the mouse inside the wire and circuit board connections. fault at a time not another PS / 2 joints, the common is not difficult to repair. usually due to relatively short lines, or liken the mouse lines are messy and hard pulling causes the reason, the solution is to open the mouse, and then use a soldering steel to solder weld. there is a situation that is bad inside the mouse cable is long because of the time result caused by aging, such failure is often difficult to find, replace the mouse is the fastest solution.

two common faults: the mouse can be shown, but can not move

the flexibility of the mouse down, not as arbitrary arrow, but slow, inaccurate positioning, or simply could not move. This is chiefly due to mechanical positioning the mouse scrolling axis in the accumulation of transmission failure caused by excessive sand, rolling does not occasion flexible. maintenance of the internal focus on the mouse X axis and Y axis on the transportation machinery. The solution is to lock the pellet to open the plastic membrane, clear the mouse pellet to coil, with a wash fabric dipped in mild cleaner on plastic cleaning the pellet, the friction shaft can be cleaned with alcohol. The best area in the axis of drop a few dew of seaming machine oil, but it must be cautious not to stream to the friction surface and the suture on the grid encoder. will all the dirt removed, the flexibility of the mouse ever resume.

three common faults: the mouse button failure

1. the mouse button without manoeuvre, this may be because the mouse button and the circuit board micro switch is too distant away or click on the switch after a period of reduced competence to use the bounce. open the mouse, the mouse buttons under the temperate thickness of glue a piece of plastic film, the thickness is insistent according to actual needs, can be used after treatment.

2. the mouse button is not the normal pop-up, this may be because when the key switch in the base of the bowl-shaped micro-fracture caused by exposure to film, especially the long-term use of plastic is easily broken reed. If a three-button mouse, you can a key that will remove the middle to the crisis. If it is good quality incipient brand-name mouse, you can solder, the open mini switch, carefully clean the contacts, some of the grease, the flasks can be used.
Keyboard
keyboard in the course of the fault declarations are varied, the reasons are multi-faceted. There is bad failure, mechanical failure has its own keys, as well as logic circuit fault, Xu Han, false welding, sealing off and the metal hole oxidation failure. repair the fault phenomena according to the analysis of different judgments, find out the cause of the malfunction, make the appropriate repairs.

a common fault: some of the keys on the keyboard, such as space key, the Enter key does not work, sometimes, adjustment shall be entered many times before - one or two characters, and some
keys such as cursor up key is pressed longer, continuously moving the cursor on the screen, this time the keyboard other characters can not enter, need to press another to bounce
.

this failure as a keyboard current keyboard, the keyboard is also sometimes the card key failure occurred. there keyboard card key phenomenon caused by the following 2 reasons: one reason is keycap insert the following position offset column, afterward pressing the button makes the keycap the body can not bounce a result of shell stuck the card key, and for this reason occurred in or near the current keyboard on the keyboard. Another reason is the key long-term use, the return spring bounce becomes poor, shrapnel and reception the pry friction larger, can not make key elasticity caused by card key, because this occurred in the long-term use of the keyboard. When the keyboard appears when the card key fault can be apportioned under the keycap, and then reception the lever reception. If the projectile by not up or fatigue, is caused by the second, otherwise the first causes. If the keycap and the key causes the body shell stuck in the put a gasket between the body, some of the pads can be slightly harder plastic (such as discarded diskette jacket) made of, its size is equal to or slightly larger than the key to body size, and press the lever in the situation to open a can through the ammonium Rod freely through the square hole, in accordance with its set of poles, plug keycap; with the keycap and the key pad to stop the body stuck, you can repair problems button; if the spring fatigue, resistance to chance colossal shrapnel card key causes failure, then the body can be special key to open, a tiny tension return spring to restore bounce; remove the shrapnel will be key to the restoration. by removing the shrapnel and reduce the resistance by rod bounce to get the fault button the resumption.

Fault Two: Some characters can not enter.

if only one key character can not enter, it may be the key failure or joints Weld. inspection, in accordance with the the method described above, open the key
disk file with a multimeter resistance calculation of contacts and off state. If the key does not forever rotate on when pressed, then clasp reed fatigue or bad, in need of mend or replacement; whether key press off when the contacts under normal, that may be due to chilly solder mutual, sealing off holes or gold scrap due to oxidation can be measured onward the publishing line, paragraph by paragraph, to find fault re-welding; Ruoyin metal cavity oxidation and failure can be clean oxide layer, and then re-weld; if caused by the metal aperture completely off circuit, it can lead to connect annexed soldering.

three common faults: if it were not for in the same column number, not in the same line can not enter the key.

line or lines may be lines elsewhere in the column circuit, or logic door circuits may be malfunctioning. this time available for testing 100MHz high frequency oscilloscope to find the apparatus cold solder joint failure point, and then repair.

four common faults: keyboard input is inconsistent with the persona screen.

such failure may be due to the phenomenon of short circuit caused the board, and its performance is The key is shown as the same as the other characters, this time can be measured multimeter or oscilloscope to determine the fault repair after.

five common faults: press a key produce a string of multiple characters, or bounce when the character key.

This phenomenon is caused by a logic circuit failure. the first characters of a column is selected, if the enter key of a row without a column, may produce the phenomenon of a digit of other characters ; if the one with the Enter key, the character will have a bounce into the system and can not be the terminal phenomenon, with an oscilloscope checking logic circuit piece, the chip to find fault with the model after the replacement of the new chips, troubleshooting.
Modem
A common failure: 56K of the Modem is not up to 56K. This problem can be from the following considerations:

1. 56Kmodem tangible highest speed can only approach 53K know next to nothing of, to think manifold effects, 56Kmodem speed generally among 45-53K.
2. Modem telephone line to a large extent influence the transmission rate, if the call line quality is not good, line voltage instability, 56K on the Modem
apt fewer than 56K; Another use of the Internet extension ambition likewise affect Internet speed.
3. not installed the correct driver.
4. and the ISP uses different protocol, only your Modem and your ISP accession is the same, Modem will meet the criterion 56K.
eliminate the above reasons, your 56K Modem is still much faster than 53K, this is your Modem hardware problems can be considered a replacement or repair
.

common Failure II: Modem disconnects often, the problem may have dropped the following reasons:

1. Phone line quality is not good;
2. If the data extremity ready (DTR) signal is invalid period Modem settings than the default, it will lead to dropped phones;
3. If your phone has a open;
4. In addition, Modem their quality and compatibility problems between different Modem Modem is caused by a common cause of dropped calls.

three common faults: Modem no dial tone

period when the Internet late at night when the dial intonation in mandate not to inspire others nap, via the proper AT directive to change: You can use the ATM0 set Modem not dial intonation, and ATM1 set to Modem Dial-up connection from a dial intonation . For the alternative of the volume you can change the emulating directions, ATL0 (low volume), ATL1 (low volume), ATL2 (in volume), ATL3 (tall volume).

four common faults: Fax speeds up to non- 14400

Modem to the maximum fax rate is 14400, and mail a fax rate of only 9600. This is because most of the fax machine to send and receive rates are
is 9600, and only use the rate of 14400 or 33600 fax, Modem fax speed will reach 14400.

five common faults: Modem can not dial or connect

if it were not for installed correctly on your Modem, communication will not work. The following lists the authentication process of the communication Modem with Windows installed an conflicting driver files, could lead to COM port and Modem not working properly, it should first check if the correct Windows98 loaded file.

1. Testing existing communication file
(1) the System directory and SERIAL.VXD COMM.DRV Windows95 floppy disk or CD-ROM file with the original file to compare, check
check the file size and date is the same.
(2) validation the System.ini file in the following lines: [boot] Comm.drv = Comm.drv [386enh] device =* vcd
(3) in the Run ini is also not related with the
* VCD file. These files are built in at the VMM32.VXD.

2.
test the modem's configuration in the , click the adoption, set the maximum baud rate modem support, and click

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