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The computer is not normal as soon as it is turned on. There are many reasons. Your description is too general to make a specific judgment. Please check for yourself according to the following possibilities.

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After the computer is turned on, it can't start normally and can't enter the operating system smoothly. There are two situations:

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1. self-check can pass, but it can't enter the system desktop, which is generally caused by system or driver problems.

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In the case of virus removal, this situation is generally due to the installation of GHOST version or other simplified version of the operating system. Because it integrates many drivers that are not necessarily suitable for your hardware devices, the system can't correctly identify and load the necessary hardware devices and system settings, which leads to the failure to enter the operating system desktop normally. It is recommended to download the original image installation version and reinstall the system, and the driver is also installed with Microsoft WHQL certification. Generally, this situation can be avoided.

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If you don't want to reinstall the system, you can try to boot F8 into safe mode, uninstall the incompatible drivers of hardware devices (that is, right-click the device in the device manager) > Properties > Presence > Digital Signature Program >: the drivers of Microsoft Windows hardware compatible publishers, automatically identify the hardware devices after startup, reinstall the downloaded drivers (WHQL) that have passed the Microsoft digital signature authentication, and then restart the computer again to see if there are any improvements.

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Then, software with duplicate functions appears in the system, causing conflicts (such as installing two or more software killers and firewalls to block advertisements).

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Check the system log->; Press Win+R key or click start > run > enter: EventVwr.msc (you can also open it >; Control Panel > Administrative Tools > Event Viewer) > When it opens, click Customize View >; Manage logs under Events and Windows Logs. Double-click to open the red error and yellow warning items to view the specific error information. Then make corresponding repairs according to the specific error information. If there is an error involving third-party software, please uninstall the software. If it is a system error, you can try to repair or restore the system manually. Log off or restart the computer. Then enter the system to see if the system is normal. If the error is still reported and cannot be fixed, you can use system backup to restore the original system.

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How to repair system file errors: insert the original installation CD, click Start, find the command prompt in the attachment, right-click to run as an administrator, and then enter SFC /Scannow command in the pop-up window. ? (You can try to repair in safe mode)

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2. When the computer is turned on, the self-check fails. There is no "drip" sound, which is caused by hardware failure. The following possibilities need to be investigated. Hardware failure should be fixed:

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1. The system time cannot be displayed and saved correctly, which is caused by insufficient battery power on the motherboard. This kind of fault can be solved by replacing the new motherboard battery and pressing DEL key in BIOS to reset the correct system time.

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2. Check whether the motherboard capacitor is bulging or leaking. If so, please go to a professional computer repair place to replace the motherboard capacitor. If possible, turn off the computer and insert the motherboard diagnostic card. Restart the computer to run the test. Determine the cause of the failure according to the displayed code.

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3. Unplug the memory card and the graphics card respectively, wipe the golden finger with an eraser, and then plug it back into the memory card and the graphics card slot and fix it.

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4. Plug all the hardware and cables firmly again, so as to avoid that the computer can't start normally because the hardware is not plugged in, which leads to the computer can't start normally. Pay attention to the self-check of memory and other hardware (such as keyboard, mouse, CD-ROM drive and hard disk) when starting.

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5. Open the chassis, start the computer, and see if the CPU (graphics card) fan works normally. If not, you can remove the dust from the fan, add lubricating oil to the shaft, and then coat the CPU (or graphics card GPU) with thermal conductive silicone grease. If the fan is not normal, it needs to be replaced.

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6. Check whether the chassis power supply is insufficient. If you have a more powerful chassis power supply at hand, try replacing it. You can determine whether the computer can't start normally due to power problems.

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7. Press DEL (usually press F2 for notebooks) to enter the BIOS and see if you can identify the hard disk. If not, replace the hard disk data cable and try again. If you can identify the hard disk, you can set it as the first startup item by using CD or USB flash drive. Boot the computer to WinPE. Use DiskGenius & gt to detect and try to repair the bad tracks on the hard disk. ★ Important Note: Repairing the bad track of the hard disk will destroy the data of the bad track and its adjacent sectors. Please make a backup of hard disk data before repairing the bad track of hard disk to avoid unnecessary data loss! ! !

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There is no signal on the display, so it is important to check the connection of the display part. Second, check whether the memory is plugged in. If there is a black screen or a white screen when the monitor is turned on, it is likely that there is a hardware failure in the graphics card or the monitor itself.

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9. According to the alarm sound of the small horn (buzzer) of the boot box and your specific BIOS information, make a preliminary hardware fault judgment. Please refer to your motherboard manual for the specific meaning of the power-on alarm. If there is no motherboard manual, you can download it from motherboard official website. )

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10. If the above steps 1-9 have been checked, and the problem still cannot be solved, alternative method or minimum load method can be used to check whether other hardware is faulty one by one. If you have a motherboard diagnostic card, you can plug in a startup computer for hardware detection to narrow down the scope of hardware troubleshooting.

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1 1. In case of hardware failure that can't be solved by various methods, it is recommended that you find after-sales service warranty or maintenance for brand-name machines, and professional maintenance points with good technology for non-brand assembly compatible machines ~

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12. After hardware troubleshooting, it still can't boot into the system normally. Just use the startup disk to boot the computer to WinPE and use the system backup to restore the system. If there is no system backup, please reinstall the operating system using the original image (CD). It is recommended to install the driver certified by Microsoft WHQL.

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Attachment > For reference > The specific meaning of the error alarm sound when the computer starts self-checking is as follows:

Bonus BIOS:

1 short: the system starts normally. ?

2 Short: General error. Solution: Reset the BIOS. ?

1long1short: Error in RAM or motherboard. ?

1 long 2 short: monitor or graphics card error. ?

1 Length 3 is short: keyboard controller error. ?

1 length 9 short: the Flash RAM or EPROM of the motherboard is wrong, and the BIOS is damaged. ?

Constant ringing (long sound): The memory module is not tightly inserted or damaged. ?

Non-stop ringing: the power supply and monitor are not connected to the graphics card. ?

Repeat short ring: there is something wrong with the power supply. ?

No sound, no display: there is something wrong with the power supply. ?

Awei resume:

1 Short: Memory refresh failed. Solution: Replace the memory module. ?

2 short circuit: memory ECC check error. Solution: Enter CMOS settings and turn off ECC checking. ?

3 Short: The system basic memory (1 64KB) check failed. ?

4 Short: System clock error. ?

5 short: CPU error. ?

6 Short: Keyboard controller error. ?

7 Short: System real mode error, unable to switch to protection mode. ?

8 Short: Memory error is displayed. Note: The memory of the graphics card refers to the video memory. ?

9 short: ROM BIOS check and error. ?

1 Multi-space: Memory error. ?

1 Long 8 Short: Test error is displayed. ?

Phoenix BIOS:

1 short: the system starts normally. ?

1 short 1 short 1 short: initialization of system power-on self-test failed. ?

1 short 1 short 2 short: motherboard error. ?

1 short 1 short 3 short: CMOS or battery error. ?

1 short 1 short 4 short: ROM BIOS verification failed. ?

1 short 2 short 1 short: system clock error. ?

1 short 2 short 2 short: DMA initialization failed. ?

1 short 2 short 3 short: DMA page register error. ?

1 short 3 short 1 short: RAM refresh error. ?

1 short 3 short 2 short: basic memory error. ?

1 short 3 short 3 short: basic memory error. ?

1 short 4 short 1 short: basic memory address line error. ?

1 short 4 short 2 short: basic memory check error. ?

1 short 4 short 3 short: EISA sequencer error. ?

1 short 4 short 4 short: EASA NMI port error. ?

2 short 1 short 2 short to 2 short 4 short 4 short (that is, the combination of all sounds starting with 2 short): basic memory error. ?

3 short 1 short 1 short: DMA register error. ?

3 short 1 short 2 short: main DMA register error. ?

3 Short 1 Short 3 Short: error in main interrupt handling register. ?

3 short 1 short 4 short: Error in interrupt handling register. ?

3 short 2 short 4 short: keyboard controller error. ?

3 short, 3 short and 4 short: the memory of the graphics card is wrong. ?

3 short, 4 short, 2 short: display error. ?

3 Short, 4 Short, 3 Short: No display ROM found. ?

4 short 2 short 1 short: clock error. ?

4 short 2 short 2 short: shutdown error. ?

4 short, 2 short, 3 short: A20 errors. ?

4 short 2 short 4 short: protection mode interrupt error. ?

4 short 3 short 1 short: memory error. ?

4 short 3 short 3 short: Clock 2 error. ?

4 short, 3 short and 4 short: real-time clock error. ?

4 short 4 short 1 short: serial port error. ?

4 short, 4 short and 2 short: parallel port error. ?

4 short, 4 short and 3 short: digital coprocessor error. ?

Compatible with BIOS:?

1 short: the system is normal. ?

2 Short circuit: The system failed in power-on self-test (POST). ?

1 length: power supply error. If it is not displayed, it is a video card error. ?

1 long, 1 short: motherboard error. ?

1 long 2 short: graphics card error. ?

1 short 1 short 1 short: power supply error. ?

3 length 1 short: keyboard error. ?

For a more accurate meaning of the power-on alarm sound, please refer to your motherboard manual.

Friendly reminder: however, the small speaker of the chassis sounds an alarm. It must be a hardware failure. If the problem cannot be solved after the above troubleshooting, delivery after sale or professional maintenance is the best choice.

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I wish you a smooth solution to the problem ~

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