The hard disk light is not on, the computer screen is black, what is the problem?

There are three possibilities, the motherboard, graphics card, memory, and the power light is on, and the motherboard may not be broken. The hard disk indicator is not on, the display is not broken, then there is only memory and graphics card, there is an alarm is memory, there is no graphics card, it may also be the power supply You change the memory module to a slot to see if there is an alarm sound If there is no motherboard, it is recommended to change a motherboard to test it.

1. Pull out the memory first, if there is no long beep alarm, it means that the CPU or the motherboard is broken, you can try whether the CPU is heating up, if there is, it means that the CPU is working, and it is basically certain that the motherboard is burning. Otherwise, there is a problem with the CPU.

2. If you unplug the memory machine and beep, it may be a problem with the graphics card. But you can also try to unplug the hardware on the motherboard and plug it back in, if it doesn't work, the motherboard coms discharge, if it still has no effect, you can basically conclude that your graphics card is broken!

The motherboard is most likely to be replaced.

If it is not convenient to replace, it is recommended to check whether the ==== PC speaker is connected ==== It may also be that the CPU memory is loose, remove it and reinstall it, and do not connect the irrelevant hard disk optical drive first, including the data cable.

And then there's the power supply, and if all of the above is excluded, it's the power supply.

If you can see the mouse, the hard drive is working. You use a USB flash drive or CD-ROM drive to start and try, if it is still the same, it is the hardware is broken, if it can be turned on, everything is normal, it means that there is something wrong with your system.

There are too many reasons for this phenomenon, all kinds of sayings upstairs may cause, but I don't agree, I have encountered a lot of this phenomenon (to explain, I am engaged in hardware maintenance), I will provide you with ideas, but also try the coms discharge of the motherboard, maybe it's on the line, second, take the motherboard out and put it in the chassis and try it directly, maybe it's on the line! If that doesn't work, try a different version upstairs! Personal opinion, for reference only!

It could be that the motherboard or CPU or power supply is broken!

Look at whether it's plugged in or not, hehe.

1. Please try to increase the brightness of the screen, and turn on and off to switch the display to avoid the screen brightness being too low or the computer screen will not be displayed due to the screen being turned off.

2. Boot up and enter the BIOS interface to check if it is displayed normally?

1) If the BIOS interface is not displayed with a black screen, it may be a hardware problem with the computer, please bring the machine to the service center for testing.

2) If the BIOS interface is normal, please try to restore the default value by pressing the F9 key on the BIOS interface, then press F10 to save and exit, and restart the computer.

If it does not work, it may be caused by a system or driver software problem, try to restore or reinstall the system after backing up the data to solve the problem.

3. External display of notebook, switch external display;

1) If the external monitor is displayed normally, please uninstall the graphics driver and reinstall it;

And make sure you have installed any updates or other programs in the near future? If so, please uninstall the installed updates and recently installed program software through [Control Panel] - [Programs and Functions].

2) If the external monitor is not displayed, or you do not have the relevant monitor device for testing, it is recommended that you take the device to an ASUS service center for testing and confirmation.

4. Please confirm whether you have installed memory or other hardware? If so, please remove the additional memory and other hardware before turning on the computer to confirm.

If you still can't solve the problem through the above methods, please bring the machine to the service center for relevant testing by the engineer.

If the laptop is turned on with a black screen. But the light on the hard drive is also not on, and it flashes and goes out. There are many possibilities for such a problem.

If this problem persists after repeated startup, then it is likely that the hard disk is faulty, it may be that the hard disk has no power supply, or the hard disk is broken, so it needs to be disassembled and repaired.

Try the cable of the different hard drive, if the fault persists, try another hard drive.

Check whether the adapter and battery are charged, it may be that the power supply part is faulty.

It could be a hardware failure. Such as hard disk, motherboard damage.

1. If the keyboard light is not lit, 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 whether the capacitors on the motherboard 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, put the rest of the hardware until the cause of the problem is found.

Summary. Hello pro The reason why the computer hard disk light has been on: If the hard disk light has been on, it means that the hard disk is constantly working, and it is repeatedly reading the data of the computer, so that the hard disk has a dead loop, and the computer will appear stuck every once in a while.

Generally, the power supply of the host that causes this phenomenon is caused, the power supply of the host is originally reduced from the voltage of 12W to below 11V, and the speed of the hard disk drive motor cannot reach the due requirement, and the head reads the data with difficulty.

Hello pro The reason why the computer hard disk light has been on: If the hard disk light has been on, it means that the hard disk is constantly working, and it is repeatedly reading the data of the computer, so that the hard disk has a dead loop, and the computer will appear stuck every once in a while. Generally, the power supply of the host that causes this phenomenon is caused, the power supply of the host is originally reduced from the voltage of 12W to below 11V, and the speed of the hard disk drive motor cannot reach the due requirement, and the head reads the data with difficulty.

It may be that the dust inside the computer is accumulated too much, the heat dissipation effect is not good, resulting in the power parts can not be played, clean up the dust inside the computer host in time, but it may also be the aging of the voltage regulation file of the power supply, then check the output voltage, you can also try to replace the new power supply to solve the fault