The computer can t be turned on, and only the keyboard light will turn on when you press the power b

1. The computer boot display does not light up the reason why the keyboard does not light up: 1. According to the situation, most of them are caused by poor contact of the memory or graphics card, open the chassis, re-insert the memory module, and clean the gold finger of the graphics card is the metal cable on the card, and it can generally be restored when booted. 2. The motherboard is unstable or dusty and will also cause a black screen, first unplug the data cable connected to the motherboard on the motherboard, turn on to see if it can pass the self-test, and completely eliminate the black screen phenomenon caused by the failure of the hard disk.

If the problem is still there, the dust will be out first, then plugged in one by one, and finally tested. Eliminate dust, poor contact, and other faults. 3. If the problem still exists, it is necessary to consider the hardware damage, and the replacement method excludes memory, graphics card, power supply, motherboard, etc.

2. Method: 1. Unplug the computer power cord first, and press the on/off key on the chassis 5-6 times. Releases the residual charge of the motherboard.

2. Then open the side panel of the chassis and plug and replace the slots of the memory. 3. Remove the CMOS battery from the motherboard and install it after 1 minute. Reference: What is the problem that the monitor does not light up after the computer is turned on, and the keyboard does not light up.

Tuba Rabbit [cited 2017-12-29].

Problem analysis: There are two situations when the computer boots up and the display does not light up: 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 working, or the power interface or power cable is in poor contact or damaged, and the latter is generally a poor contact due to loose or oxidized memory modules, or poor contact with the display data cable, or damage to the memory, graphics card, display or data cable.

Handling suggestions:1If the monitor is powered on but no signal is displayed, turn off (if the short press of the power switch is invalid, press and hold the switch until the power indicator goes out or directly unplug the power cord) Power off the case, replug and unplug the memory module, and wipe the gold finger with an eraser in one direction (the back of the thumb fingernail is also fine), if possible, it can also be installed in different memory slots, and then turned on after installation (before operation, you should also touch the wall with both hands to release your static electricity or wear anti-static gloves).

If you don't know how to operate, then it's simple: slap or kick the chassis once or twice (pay attention to the location: the front of the shell on the left and right sides of the chassis that has no interface at the back; Attention Tract:

Don't push too hard, and certainly don't be weak). The above may need to be repeated, and if it doesn't work, you need to replace the memory module. If you have more than two memory modules, you need to test them one by one.

2.If the above operations do not work, turn off the power and turn on the chassis, reinsert the graphics card, and plug in the data cable between the monitor and the graphics card. If it still doesn't work, consider that the cable or graphics card is damaged, then replace it with a new one.

3.If the monitor is not powered on (the indicator light is not on), check whether the power switch is turned on, then check the back of the monitor, plug the power cord connected to the monitor upwards (the power cord can be replaced if possible), and check whether the other end of the power cord is powered on to the outlet. 4.

If the display can be displayed when connected to another monitor or the display of this machine is connected to another normal host and still cannot be displayed, it means that the monitor is damaged and needs professional repair.

According to the situation, most of them are caused by poor contact between memory or graphics card, open the case, reinsert the memory module, and clean the gold finger of the graphics card, which is the metal cable on the card, and it can generally be restored after booting.

You can check if there is any problem with the line.

1.The monitor plug is loose or the signal cable is damaged. Plug in tightly or connect with a new cable.

2.The keyboard socket is loose or damaged. Plug it in tightly or try it with a good keyboard.

3.The gold finger of the memory module is dirty. Shut down the memory with an eraser strip to erase the gold finger of the memory, and clean the slot with a brush.

4.There is a discrete graphics card cheat. Do the graphics card cheat clean, clean the slot with a brush.

If there is a separate graphics card, check the graphics card in the same way, if it can't be solved, see if the motherboard has obvious damage such as capacitor bursting, or replace the host power supply, if it still can't be solved, it can only be sent for repair.

If even the keyboard light is not lit,Then this should be a problem with the computer's memory,It may be that the memory module is loose,Friends with strong hands-on ability pull up the memory and wipe it clean with an elephant trunk wipe to try it at boot。

If even the keyboard light doesn't light up, then this should be a problem with the computer case, then I suggest you take the case to find a computer city, and then find a repair, let him repair it for you. If it's a hardware problem, then change the hardware, if the ** is too high, the computer is too old, you can consider directly replacing it with a new one.

The computer is turned on, but the screen is not lit, and the keyboard light is not on

The computer's power supply is aging or broken. Give it a try by changing the power supply.

The computer motherboard is broken. Recall if there was any previous situation where it might burn the motherboard.

Hello, the screen does not light up after the computer is turned on, it may be a problem with the computer host, or it may be a problem with the computer screen. In addition, the keyboard light is not lit, and it can be determined that there is a problem with the computer host.

Ninety percent of the memory is poor contact, and those with strong hands-on ability can be shut down and powered off, and the memory can be wiped clean and installed. No, it's a hardware problem, send it for repair.

Releases the residual charge of the motherboard. 2. Then open the side panel of the chassis and plug and replace the slots of the memory. 3. Remove the CMOS battery from the motherboard and install it after 1 minute.

You can think about it first to see if it's a problem with the memory module, plug and unplug the memory module, turn on the computer to see if the keyboard light will be on, if it can't be turned on, consider other aspects.

Remove the memory module first, wipe the gold finger clean and install it.

Serious computer hardware failures. Turn on the host to troubleshoot. Make sure that the individual data cables are connected and minimize the system to see.

Reasons why the keyboard light doesn't light up:

If the computer keyboard indicator does not light up, it is likely not caused by hardware damage, or it may not light up without pressing the corresponding key, so don't worry when the keyboard indicator light is not on. Just press "numlock", "caps lock"...

If the three keyboard indicators still do not light up after pressing the three keys mentioned above, it is necessary to consider other reasons. First of all.

If you make sure that all the interfaces are OK, try pressing the corresponding button of the keyboard light, "numlock", .

The CPU is overheated, and the motherboard self-test is over-temperature and the protective shutdown is overheated. Check whether the CPU fan is turned on and rotated, if it does not rotate, the fan is broken

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Hello, I'm glad to answer for you. The possible reasons why the computer does not turn on, the screen does not light up, and the keyboard light does not light up are as follows:1

Power failure: A power failure may cause the computer to not turn on properly. You can try plugging the power cord back in or replacing the power supply.

2.Memory issues: Corrupted or unplugged memory can also cause the computer to fail to boot properly.

You can try to reseat the memory module. 3.Graphics card issues:

A faulty graphics card can also cause your computer screen to be rough and not light up. You can try to reseat the graphics card or replace it. 4.

Hard disk problems: Hard disk failure reports may also cause the computer to fail to boot properly. You can try to reseat or replace the hard drive.

5.Motherboard problem: The motherboard therefore [the number of words exceeds the limit, you can be in"Personal Center"Top up your membership to get unlimited experiences