Computer will not boot, cpu fan turn faster or slower, no alarm sound!
[Users questions | Browse:58 | Favorites]
Users questions: Computer will not boot, cpu fan turn faster or slower, no alarm sound! Dismantle the machine, leaving only power supply and motherboard, start the computer with the short hair! Failure still! (Can not boot, cpu fan turn faster or slower, no alarm sound)! Power failure with no substitution test, which experts tell me what it is Barrier! ! Thank you! !
Experts answer: BIOS battery will discharge (recovery BIOS factory default) recommended plug about graphics cards, memory, clean up health and polished graphics card, memory of the finger. PC boot no display troubleshooting method (see if there is the capacitance from the drum). Step 1: First First check whether the computer's external wiring connected to each connection re-insert it again to see whether the exclusion of failure. Step 2: If the fault persists, then open the main chassis view and whether the excess metal chassis, the deformation caused by short circuit or motherboard, chassis and whether the charred smell of paste flavor, without the burnt chip on the motherboard , CPU, etc. for damage around the capacitor. Step 3: If not, then clean up the dust on the motherboard, then check whether the computer normally. Step 4: If the fault persists, then unplug the motherboard's Reset line and other switches, light connection, and then short-circuit switch with a screwdriver, see if you can can start . Step 5: If you can not boot, then use the minimum system method, the hard drive, floppy drive, optical drive data cord, and then check whether the computer can boot, if the computer monitors the boot screen appears, the problem in these devices. Then one by one over several devices to access the computer, when access to a certain Equipment, failure to reproduce, indicating that the failure was caused by this device, and finally focus on examination of this device. Step 6: If the fault persists, the fault may be caused by memory, video card, CPU, motherboard and other equipment caused. Then use the plug method, exchange and other methods were examined memory, graphics card, CPU and other equipment are Normal, if there is damage to the equipment, replacement of damaged equipment. Step 7: If the memory, graphics card, CPU and other equipment properly, and then discharge the BIOS, using the isolation method, the board placed outside the enclosure, connected to memory, graphics card, CPU and other tests, if the computer can display, and then then Motherboard Installed into the chassis to test until you find the cause of the malfunction. If the fault persists you will need to return the motherboard manufacturer for repair. Step 8: Computer power no display but the alarm sound, when the computer boot time, the system BIOS to start POST (Power On Self Test), when the computer detects a device in a fatal error , They will control the speaker sound reporting errors. Therefore, there may be no display power failure alarm. For the computer starts without showing alarm fault alarm sound can be the meaning of BIOS to check the faulty equipment, to troubleshooting. Motherboard Fault diagnosis: Computer Motherboard More complex, the failure rate is relatively high, the failure distribution is more dispersed. According to the source of generation fail, failure can be divided into the motherboard 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 Damage, leading to the motherboard failure. 2, man-made causes: the use of computer, hardware or indiscriminate use of free hot metal 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 in a variety of other reasons leading to the motherboard chipset, 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, carefully View all search motherboard slot, fan, chips, etc. have no signs of damage: whether on the motherboard burnt, burns, blistering, break the board, socket corrosion, exploding capacitors where: BIOS batteries are charged . If there is obvious damage to the areas to be targeted maintenance. Step 2: If the board is not clear 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. 3V, 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 (
Experts answer: BIOS battery will discharge (recovery BIOS factory default) recommended plug about graphics cards, memory, clean up health and polished graphics card, memory of the finger. PC boot no display troubleshooting method (see if there is the capacitance from the drum). Step 1: First First check whether the computer's external wiring connected to each connection re-insert it again to see whether the exclusion of failure. Step 2: If the fault persists, then open the main chassis view and whether the excess metal chassis, the deformation caused by short circuit or motherboard, chassis and whether the charred smell of paste flavor, without the burnt chip on the motherboard , CPU, etc. for damage around the capacitor. Step 3: If not, then clean up the dust on the motherboard, then check whether the computer normally. Step 4: If the fault persists, then unplug the motherboard's Reset line and other switches, light connection, and then short-circuit switch with a screwdriver, see if you can can start . Step 5: If you can not boot, then use the minimum system method, the hard drive, floppy drive, optical drive data cord, and then check whether the computer can boot, if the computer monitors the boot screen appears, the problem in these devices. Then one by one over several devices to access the computer, when access to a certain Equipment, failure to reproduce, indicating that the failure was caused by this device, and finally focus on examination of this device. Step 6: If the fault persists, the fault may be caused by memory, video card, CPU, motherboard and other equipment caused. Then use the plug method, exchange and other methods were examined memory, graphics card, CPU and other equipment are Normal, if there is damage to the equipment, replacement of damaged equipment. Step 7: If the memory, graphics card, CPU and other equipment properly, and then discharge the BIOS, using the isolation method, the board placed outside the enclosure, connected to memory, graphics card, CPU and other tests, if the computer can display, and then then Motherboard Installed into the chassis to test until you find the cause of the malfunction. If the fault persists you will need to return the motherboard manufacturer for repair. Step 8: Computer power no display but the alarm sound, when the computer boot time, the system BIOS to start POST (Power On Self Test), when the computer detects a device in a fatal error , They will control the speaker sound reporting errors. Therefore, there may be no display power failure alarm. For the computer starts without showing alarm fault alarm sound can be the meaning of BIOS to check the faulty equipment, to troubleshooting. Motherboard Fault diagnosis: Computer Motherboard More complex, the failure rate is relatively high, the failure distribution is more dispersed. According to the source of generation fail, failure can be divided into the motherboard 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 Damage, leading to the motherboard failure. 2, man-made causes: the use of computer, hardware or indiscriminate use of free hot metal 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 in a variety of other reasons leading to the motherboard chipset, 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, carefully View all search motherboard slot, fan, chips, etc. have no signs of damage: whether on the motherboard burnt, burns, blistering, break the board, socket corrosion, exploding capacitors where: BIOS batteries are charged . If there is obvious damage to the areas to be targeted maintenance. Step 2: If the board is not clear 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. 3V, 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 (
- I want to upgrade next computer, playing modern air combat?
- Watching high-definition video settings problem
- Point does not light up
- Hardware problem! ! ! ! ! Urgent! ! ! ! ! ! ! ! I am online, etc.! ! ! !
- Jetway P43 or not to support VT is
- My computer automatically restarts and blue screen
- NVIDIAGeForce8400SE (521 megabytes)
- This line is inserted where?
- Ask for advice: run four or five minutes after the computer automatically shut down
- Tongfang love C2650-X002
- This information provided by the users.Thanks!
Computer Knowledge Copyright 2005-2015 All Rights Reserved.