The computer boots up sometimes abnormally, what is the reason why the computer cannot boot normally

It's a problem with the hard drive, and the hard drive has a logical error.

Do a low-level formatting, find out the bad sectors, and you're good to go after repairing.

But you have to format the entire hard drive.

Ask if your computer only has this problem in winter, and it's OK in summer

If it's only in winter, it's a matter of temperature, and that's the case with some computers.

Sometimes it doesn't start when you start to the slider? It depends on what you're setting up.

Teach you three tricks to solve win7 system can not start normally.

1. The computer can pass the self-test, and later hear a "beep" sound, a blue screen appears, etc., and cannot log in to Windows.

This situation is generally caused by system damage, driver or hardware conflicts, viruses, etc., and is relatively simple to solve.

1. During the boot process, select "Last correct configuration boot". If it cannot be resolved, proceed to the next step;

2. During the boot process, pay attention to press the "F8" key to enter the safe mode, in this mode, uninstall and reinstall the "!" by importing the backed up registry, antivirus, and viewing the hardware device manager".

3. It is worth mentioning that a malfunctioning keyboard or not plugging in properly will also cause a blue screen with "keyboard error or no keaboard present.""If there is no problem with the keyboard and motherboard sockets, clean the keyboard connector and plug it in again.

4. The boot is normal without display, check whether the power cord, switch, and data cable of the display are correct, or it is possible that the display is damaged, which can be easily troubled by observing the host situation and starting sound.

5. Reinstall the system. There's no denying that this is one of the ultimate means of solving software problems and is a must-have for DIY players.

2. Black screen, no alarm sound.

1. For poor contact, carefully check the power socket, the power plug behind the chassis, the power connector on the motherboard, and even the switch on the power supply (if any), and plug and unplug it again.

2. If there is a problem with the chassis switch, restart button, and connection cable with the motherboard, unplug all the cables from the motherboard and connect the switch jumper directly with tweezers.

3. The motherboard is short-circuited, carefully check whether there is contact with the chassis and other parts around the motherboard and on the back.

4. If the BIOS is not properly set, use the jumper to clear the CMOS settings of the motherboard. (This problem mostly occurs when overclocking or improper hardware settings, if you don't have this aspect of the operation, you can ignore it.)

5. If the motherboard or power supply is damaged, or even the CPU is burned, try replacing it with a new one.

3. The start-up alarm sound cannot be started.

1. Poor contact, including graphics card, memory, hard disk cable, power cable, etc., clean up the dust, use an eraser to erase the gold finger of the graphics card and memory and replug it tightly. These are the most common and the easiest to solve. Clean up the dust in the chassis to improve heat dissipation and ensure the normal operation of each fan.

2. If the graphics card or memory is damaged or there is a compatibility problem with the motherboard, the replacement method will solve it. If it is multiple RAM, you can try it with one.

3. Hard disk problem, "non system disk or disk error, replace and strike any key when ready" appears when booting up" " hard di

Ask how to get it.

Press enter, no, press F8

You'll need to recheck all the parts in the case

1. Whether the CPU fan is normal.

2. Whether the fan of the graphics card is normal.

3. Whether there is hardware with poor contact.

4. Take off the hardware and clean up the dust before putting it back on.

5. It is normal for the hard disk to make a sound, and the sound belongs to.

Resonance is visible, don't worry too much.

1. It is the sound of reading the hard disk, maybe the sound of your hard disk is loud or there is a problem with the system. There are many reasons why the boot is not working properly, depending on your situation: it may be that the hardware is not in good contact.

How to troubleshoot the failure of the computer without display when it is turned on (check whether there is a bulging capacitor).

Step 1: First of all, check whether the external wiring of the computer is connected, and plug in each cable again to see if the fault is eliminated.

Step 2: If the fault persists, then open the main chassis to check whether there is any excess metal in the chassis, or a short circuit caused by the deformation of the motherboard, and smell whether there is a burning paste in the chassis, whether there are burned chips on the motherboard, and whether the capacitors around the CPU are damaged.

Step 3: If not, then clean the dust off the motherboard and check if the computer is in good condition.

Step 4: If the fault persists, unplug the reset cable on the motherboard and connect it with other switches and indicator lights, and then use the change cone short-circuit switch to see if it can turn on.

Step 5: If you can't turn on the computer, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on. Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.

Step 6: If the fault persists, the fault may be caused by devices such as memory, graphics card, CPU, motherboard, etc. Then, use the plug-in method, swap method and other methods to check whether the memory, graphics card, CPU and other devices are normal, and replace the damaged devices if there are damaged devices.

Step 7: If the memory, graphics card, CPU and other devices are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, graphics card, CPU, etc. for testing, if the computer can be displayed, then install the motherboard into the chassis for testing until the cause of the fault is found. If the fault persists, you need to return the motherboard to the manufacturer for repair.

Step 8: When the computer is turned on without display but there is an alarm sound, when the computer is booted up, the system BIOS starts to POST (power-on self-test), when it detects a fatal error in a device in the computer, it will control the speaker to send out a sound to report the error. Therefore, there may be a fault that the power is turned on without displaying an alarm sound.

If the computer is turned on and there is no alarm sound, the fault can be checked according to the meaning of the BIOS alarm sound to check the faulty device to eliminate the fault.

Discharge the BIOS battery (restore the BIOS factory defaults) It is recommended to plug and unplug the graphics card and memory, clean it up, and polish the gold finger of the graphics card and memory.

If the following happens:

Constant ringing (long sound): The memory module is not plugged in tightly or damaged. Reinsert the memory module, if it still doesn't work, you have to replace it.

One piece of memory. Ringing: The power supply and monitor are not properly connected to the graphics card. Check all the plugs.

Repeated short rings: Power supply issues.

No sound, no display: Power issue.

Youbros prays that your PC will be in working order as soon as possible! Good luck !

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By the way, this is a pure software problem, and it has nothing to do with the hardware, let alone the motherboard battery is dead.