The computer can t turn on, the keyboard doesn t respond, and the monitor shows no signal input

Friend, if you can't turn it on, you can try to do this:

1 After booting, press Del into the BIOS, load defaults settings, restore the default settings, save and restart.

2。If not, press F8 to enter safe mode, check and kill viruses and Trojans in safe mode, and repair IE.

If you can't solve the problem,,,,,, it may be a hardware problem, so move on to the next step.

3。Unplug the memory module, use the eraser to clean the gold finger, go up, or swap a slot, in addition, the BIOS can put the memory.

The frequency or CAS value is adjusted down one level (the higher the CAS value, the lower the CAS).

For multiple root memory, you can reduce one of them, and if the problem is resolved, it means that there is a problem with that memory or at least it is not compatible.

4 Check the heat dissipation of the CPU and graphics card, the ash on the fan and heat sink should be cleaned, and the shaft of the fan can be oiled, but it is really not possible.

You can change it, and it is best to reapply silicone grease to both the CPU and the graphics card GPU.

5. You can spend about 30 to buy a debug card for the PCI interface, which can test which part of the hardware is broken.

It may be a problem with the power supply, and it is recommended to find a professional to check it.

It is estimated that the memory module is not very stable ......

There could be several reasons:

Problems with the device interface may not be found by the system. The solution can be solved by re-plugging the interface.

The power supply of the motherboard is not normal. Mainly look at the motherboard and memory, clean and plug the memory to try.

Unplug the graphics card and test it directly on the VGA port of the motherboard.

Input signal The electronic signals (including sound and image) that can be displayed, audio-visual, and operated through the output of instruments, audio amplifiers, amplifiers, mixers, etc., are called output signals.

The input signal can be divided into high frequency, medium frequency, low frequency, etc. due to different frequencies; Due to the different uses and electronic instruments, it is divided into instrumentation input signal, audio input signal, ** input signal, carrier input signal, photoelectric input signal, program control input signal, AC input signal, DC input signal and so on.

Summary. The computer monitor has no signal, and the keyboard and mouse light does not light up.

There are many friends who have responded that the computer boot display has no signal, and the keyboard and mouse light are not lit, what should I do? Don't worry, I'll provide you with a solution right away, and those who don't know it will try it together with the following methods.

1. Loose running memory or gold finger oxidation.

If the computer memory module is loose, it will cause the computer to fail to boot normally, which is more likely to happen, so it is recommended to try it first. We turn on the host computer, open the side panel of the chassis and pull out the memory module, and then reinstall the memory into the memory slot, if not, it is recommended to replace the memory into other memory slots, and then try to boot it to test. If you have friends with multiple memory, you might as well insert one memory first, and the other memory will not be inserted first, try to boot the test, if not, change to another memory insertion, and this memory is not inserted, alternate testing, it is not excluded that one memory is damaged, or one of the memory is loose.

What is the reason why the computer is turned on, the monitor shows no signal input, and the mouse and keyboard are not lit?

What is the reason why the computer is turned on, the monitor shows no signal input, and the mouse and keyboard are not lit?

The computer monitor has no signal, the keyboard and mouse light is not lit, and many friends have reacted that the computer boot monitor has no signal, and the keyboard and mouse light are not lit, what should I do? Don't worry, I'll provide you with a solution right away, and those who don't know it will try it together with the following methods. 1. Loose running memory or gold finger oxidation computer memory will cause the computer to fail to boot normally, this probability is large, it is recommended to try first.

We turn on the host computer, open the side panel of the chassis and pull out the memory module, and then reinstall the memory into the memory slot, if not, it is recommended to replace the memory into other memory slots, and then try to boot it to test. If you have friends with multiple memory, you might as well insert one memory first, and the other memory will not be inserted first, try to boot the test, if not, change to another memory insertion, and this memory is not inserted, alternate testing, it is not excluded that one memory is damaged, or one of the memory is loose.

Second, the motherboard button battery for discharge button battery discharge is very simple, there will be a button battery on the motherboard, use a hand buckle or screwdriver to loosen the tenon of the button battery, then the CMOS battery on the motherboard will also automatically pop up, then we can take it out directly by hand, place the button battery for ten seconds, and reinstall it in place, we are testing it.

Third, the display and the host ** wire connection error display wiring error is a problem often encountered by users, generally this kind of host has installed an independent graphics card, and many users have inserted the ** line of the display on the motherboard on the display interface, this is the wrong connection method, resulting in the computer can not be turned on normally, the display black screen has no signal input. The user of the integrated graphics card must be correct when inserting the display interface of the motherboard, in addition, it is not excluded that the **cable is loose, or the display screen is black caused by the **wire damage.