Display a black screen before boot into the desktop
[Users questions | Browse:32 | Favorites]
Users questions: Hello, everyone: I have a desktop computer, every time at boot time to open several times to enter, each going into the desktop, on a black screen, and how it is, hope everyone more pointing, when the display is a black screen, CD-ROM can not access, health plate light is not bright instructions! Rush! ! ! ! ! ! ! !
Experts answer: a As may be the CPU fan auto-off too much lead dust, the proposed clean up the CPU fan and heat sink of dust, plus new thermal grease, if a problem is the fan switch to high fan another good (if not the problem may be the motherboard problem). Automatic shutdown troubleshooting: 1, The problem may be the BIOS settings, enter the BIOS to restore the default settings or the motherboard battery out, wait 5 minutes to go in loaded. Objective: is to restore the default BIOS settings, remove the BIOS default auto-restart or shut down cooling phenomenon. 2, if a computer application using a Software automatic shutdown occurs, the automatic shutdown software failure may be caused by this program, you can usually uninstall the software. 3, then check the power supply, power quality is poor, aging or the power is too small to meet the computer needs of all parts of the power supply, high-power high-quality power supply can be replaced, if troubleshooting In addition, it is automatically shut down due to power failure. 4, and then use process of elimination, check memory, video card, CPU, CPU fan, motherboard, etc. 5, check memory, memory, low quality, improper cooling, overclocking, the memory of different brands and mixed into the CAS is set too low and so can cause the computer automatically shut down Can be used to test the memory and the BIOS memory parameters adjusted accordingly. 6, check the motherboard, motherboard aging, failure, or exploding capacitors, power supply pin motherboard, motherboard and chassis, backplane, etc. can cause a short circuit shut down automatically, remove the motherboard from the chassis can be checked or tested, and then check the CPU fan Rotation and the CPU temperature is normal, then check the CPU heat sink fan is at the bottom of silica gel to dry, if dry, the CPU fan on the silica gel clean up and re-coated with silica gel can be good. If the fan is not working properly, replace the CPU fan. 7, cleaning method: a host computer through the Parts to clean the dust to troubleshooting methods. Dust can also cause the computer is automatically shut down one of the factors of failure, dust can cause aging of components, pin oxidation, poor contact and short circuits. For the dust caused by these failures, the general use of more effective cleaning method. 8, the power supply system instability, Can cause automatic shutdown fault occurs, the configuration can be considered a function of the UPS with a backup power supply voltage. Fault diagnosis motherboard (motherboard power failure can cause the shutdown problem): computer motherboard complex structure, relatively high failure rate, failure distribution is more dispersed. Produced according to the source fault, so the motherboard Barriers can be divided into a power failure, bus failures, component failures, etc. Caused by failure of the board include the following main reasons. 1, components reasons: chip on the motherboard and other components of poor quality, resulting in aging of the motherboard is damaged, leading to the motherboard failure. 2, man-made causes: the use of computers, free hot-swappable hard Or indiscriminate use of metal parts to touch a variety of joints causing board failure. 3, dust, electrostatic reasons: due to dust or static electricity board is bad, short or burnt chip on the motherboard, which led to the motherboard failure. Bad reason: because corrosion, oxidation, decreased flexibility, pin sealing off, broken and other causes Board in a variety of chips, socket, interface is bad, which led to the motherboard failure. Characteristics for the motherboard and cause of the malfunction, when the motherboard fails, board fault diagnosis method is as follows. Step 1: First check the board carefully view each slot, fan, chips, etc. have no signs of damage: whether burnt on board , Burns, blistering, break the board, socket corrosion, exploding capacitors where: BIOS battery has power. If there is obvious damage to the areas to be targeted maintenance. Step 2: If the board is no obvious signs of damage, then clean with a soft brush the dust board, check the board after cleaning is normal . If it works, is dust caused by the failure. Step 3: If, after cleaning up the dust, or not normal, then each board with a multimeter measuring the supply voltage is normal (+5 V, +12 V, +3.3 V, etc.). If there is abnormal voltage, check the power supply and motherboard power circuitry is faulty . Step 4: If the motherboard voltage is normal, then check power to the motherboard, the motherboard to see whether the heat of the chip. If you have a fever of chips, first check the chip's heat input, the output is a signal (see waveform). If the input signal, no output signal, and then check whether the chip clock signal heating
Experts answer: a As may be the CPU fan auto-off too much lead dust, the proposed clean up the CPU fan and heat sink of dust, plus new thermal grease, if a problem is the fan switch to high fan another good (if not the problem may be the motherboard problem). Automatic shutdown troubleshooting: 1, The problem may be the BIOS settings, enter the BIOS to restore the default settings or the motherboard battery out, wait 5 minutes to go in loaded. Objective: is to restore the default BIOS settings, remove the BIOS default auto-restart or shut down cooling phenomenon. 2, if a computer application using a Software automatic shutdown occurs, the automatic shutdown software failure may be caused by this program, you can usually uninstall the software. 3, then check the power supply, power quality is poor, aging or the power is too small to meet the computer needs of all parts of the power supply, high-power high-quality power supply can be replaced, if troubleshooting In addition, it is automatically shut down due to power failure. 4, and then use process of elimination, check memory, video card, CPU, CPU fan, motherboard, etc. 5, check memory, memory, low quality, improper cooling, overclocking, the memory of different brands and mixed into the CAS is set too low and so can cause the computer automatically shut down Can be used to test the memory and the BIOS memory parameters adjusted accordingly. 6, check the motherboard, motherboard aging, failure, or exploding capacitors, power supply pin motherboard, motherboard and chassis, backplane, etc. can cause a short circuit shut down automatically, remove the motherboard from the chassis can be checked or tested, and then check the CPU fan Rotation and the CPU temperature is normal, then check the CPU heat sink fan is at the bottom of silica gel to dry, if dry, the CPU fan on the silica gel clean up and re-coated with silica gel can be good. If the fan is not working properly, replace the CPU fan. 7, cleaning method: a host computer through the Parts to clean the dust to troubleshooting methods. Dust can also cause the computer is automatically shut down one of the factors of failure, dust can cause aging of components, pin oxidation, poor contact and short circuits. For the dust caused by these failures, the general use of more effective cleaning method. 8, the power supply system instability, Can cause automatic shutdown fault occurs, the configuration can be considered a function of the UPS with a backup power supply voltage. Fault diagnosis motherboard (motherboard power failure can cause the shutdown problem): computer motherboard complex structure, relatively high failure rate, failure distribution is more dispersed. Produced according to the source fault, so the motherboard Barriers can be divided into a power failure, bus failures, component failures, etc. Caused by failure of the board include the following main reasons. 1, components reasons: chip on the motherboard and other components of poor quality, resulting in aging of the motherboard is damaged, leading to the motherboard failure. 2, man-made causes: the use of computers, free hot-swappable hard Or indiscriminate use of metal parts to touch a variety of joints causing board failure. 3, dust, electrostatic reasons: due to dust or static electricity board is bad, short or burnt chip on the motherboard, which led to the motherboard failure. Bad reason: because corrosion, oxidation, decreased flexibility, pin sealing off, broken and other causes Board in a variety of chips, socket, interface is bad, which led to the motherboard failure. Characteristics for the motherboard and cause of the malfunction, when the motherboard fails, board fault diagnosis method is as follows. Step 1: First check the board carefully view each slot, fan, chips, etc. have no signs of damage: whether burnt on board , Burns, blistering, break the board, socket corrosion, exploding capacitors where: BIOS battery has power. If there is obvious damage to the areas to be targeted maintenance. Step 2: If the board is no obvious signs of damage, then clean with a soft brush the dust board, check the board after cleaning is normal . If it works, is dust caused by the failure. Step 3: If, after cleaning up the dust, or not normal, then each board with a multimeter measuring the supply voltage is normal (+5 V, +12 V, +3.3 V, etc.). If there is abnormal voltage, check the power supply and motherboard power circuitry is faulty . Step 4: If the motherboard voltage is normal, then check power to the motherboard, the motherboard to see whether the heat of the chip. If you have a fever of chips, first check the chip's heat input, the output is a signal (see waveform). If the input signal, no output signal, and then check whether the chip clock signal heating
- Computer monitor cable
- Help choose a ViewSonic LCD 19 or 23.
- Monitor resolution settings
- Monitor problem, then, is generally what the problem?
- What is meant by the magic light and Samsung monitor magic transfer function?
- LCD display with full screen start flashing when the bars, consult experts. Urgent! !
- Computer monitor for a long time before light (75)
- NvidiaGeforce9600GT (512)
- Old-fashioned display problem
- The letter is on display What do you mean?
- This information provided by the users.Thanks!
Computer Knowledge Copyright 2005-2015 All Rights Reserved.