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There must be a problem with the computer hardware, and it is best to use the replacement method to eliminate the problem, and the judgment method:
1. Press the upper and lower case on the keyboard. The light is on, indicating that the graphics card, monitor, and other hardware are faulty.
2. If the keyboard light does not light up, it means that it is a memory, CPU, motherboard, or power supply problem.
Solution: 1. If the keyboard light does not light up, first wipe the memory module with an eraser, and check whether the gold finger of the memory module has any burnt marks. Replace the memory in the slot.
2. Check the capacitors and resistors on the motherboard to see if the capacitors are bulging, whether there is a burning smell on the motherboard, and clean up the dust on the motherboard.
3. Remove the CPU fan, power on and turn on, test whether the CPU has a temperature change by hand, if not, the CPU is not working, either the motherboard is broken, or the CPU is not plugged in properly, and the CPU is re-plugged.
4. Power supply problem, although the power supply is powered on, but the motherboard can not work normally, replace the power supply and try it.
5. If the display card is loose or oxidized, the keyboard light will be on, the screen will not be displayed, wipe the gold finger of the graphics card with an eraser, and check whether the capacitance on the graphics card is bulging.
6. Minimize the test method, only leave the power supply, motherboard, CPU, memory, graphics card, keyboard, monitor, unplug all the wires on the rest of the motherboard, use a screw knife to short the switch pins, if normal, add the rest of the hardware, piece by piece, until the cause of the problem is found.
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What does it prompt when it starts up? Take a picture**.
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Press F10 to enter the BIOS, set all boot boots to hard disk boots, and enter CMOS to see if the floppy drive is turned off, if not, turn it off.
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BIOS Setup Problems You set up the floppy drive without it.
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The boot is stuck in the logo interface, which must be a hardware problem.
Your computer is a brand machine, and the progress bar in the middle is the progress of the boot hardware self-test.
Now the self-test is not completed, it is more likely to be a memory recognition problem?
It is recommended to disassemble the machine and take out the memory, polish the gold finger with an eraser, and then put it back to try, which can basically start normally.
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Since there is no response after pressing, you should take it to the repair shop to check it. Or you can change the keyboard and press F2 again.
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Can I redo the system? Try it yourself. If you really can't do it, send it to a computer repair shop.
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1. If you can't enter the BAI system when you boot up the motherboard logo, you need to restart the DU button to skip the LOGO screen or press the DEL key (the notebook is zhif2 or other) to enter the CMOS setting interface, and DAO will turn off the Full Screen Logo Show in the Advanced BIOS Features tab to see if the boot POST information can be displayed, and then take a screenshot to determine the problem.
2. Under normal circumstances, according to the prompt information of the black screen and white characters on the screen, press the F1 key to skip the non-fatal error and start the computer directly, or press the del key to enter the CMOS, and then press F9 to load the predefined parameters or select Load Optimized Defaults (load the high-performance default) or Load Fail-Safe Defaults (load the fail-safe default), and then press F10 to save and exit the restart.
3. If the above operation is invalid, it means that there is a problem with the hardware, generally the memory and the hard disk may be in poor contact or the hard disk boot sector is damaged, and it is necessary to reinsert or repair the boot sector or reinstall the system or replace the hard disk.
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1.Boot press F8 to immobilize to the advanced option appears in the let go, select "the most recent correct configuration" Enter to repair.
2. Press F8 to enter the safe mode after booting up, and then exit, select Restart or Shut Down to boot on, and you can enter the normal mode (repair the registry).
3. If the fault persists, please use the system restore that comes with the system to restore it to the time when you did not have this failure (or use the restoration software to restore the system).
4. If the fault persists, use the system disk to repair it, open the command prompt and enter sfc scannow Enter (there is a space between sfc and ), insert the original system disk to repair the system, and the system will automatically compare and repair.
5. If the fault persists, set the optical drive in the BIOS as the first boot device, insert the original system installation disk, press the R button, and select "Repair Installation".
6. If the fault persists, it is recommended to reinstall the operating system. You can try the U Guard (uweishicom) U disk installation system, which is easy to use, free and clean.
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In this case, there is a problem with the motherboard chip, or it may be that the motherboard battery needs to be replaced, and there is another way, press F1 to enter the CMOS and reset the date and time, and you can enter the system after saving and exiting.
Problem analysis: There are two situations when the computer boots up the black screen: the display is not powered on (the power indicator is not on) or the display is powered on (the power indicator light is on) but there is no signal or the screen shows "no sighal", the former means that the circuit is not connected, or the power interface or power cord is in poor contact or damaged, and the latter is generally a loose or oxidized memory module and poor contact, or the display data cable is not in good contact, or the memory, graphics card, display or data cable is damaged. >>>More
The computer always restarts automatically.
This is a crash, restart the computer or not, boot up and press f8 to see if you can enter the safe mode, if you can restore the system, if you can't or there is no system restoration, just reinstall the system, format the hard disk and repartition it to reinstall the operating system. >>>More
What to do if your Apple phone doesn't turn off.
It's very simple, right-click on My Computer, then select Manage, select Disk Management in the dialog box that opens, and then right-click on the drive letter you want to change. >>>More