The screen and keyboard light did not respond when the computer was turned on.

Newly bought??? This problem is difficult, is it not a bad contact with the plug-in cable? It is recommended to unplug the various parts and reconnect them again, generally the first consideration of the new machine is the poor wiring, but do you have a record of opening the chassis operation?

Is it bought in a regular computer city or a home appliance mall? It is not excluded that the motherboard capacitor is burned, and the memory module is refurbished. You can reconnect the parts first and see if the problem is alleviated.

The problem of the motherboard,Most of the problems are the virtual welding of the north bridge and the south bridge The working temperature of this component is very high,When the computer is not working, it will drop to a long temperature,There are many phenomena of virtual welding caused by thermal expansion and cold contraction.,Find a professional to re-solder once.。。

It is possible that the problem of the motherboard integrated graphics card and especially playing large 3D games puts too much pressure on the motherboard.

There is also the memory module with an eraser to erase the metal contact points before plugging them back.

Generally speaking, if the memory is broken or the gold finger of the memory is not in good contact, you can try to replace it with a new one, or unplug it and plug it in again.

Solution: 1. Check whether the driver has been deleted by mistake. Because the keyboard drivers come with the operating system, it is easy to restore the driver after it is deleted. Open Device Manager and find the Keyboard option.

2. In the keyboard properties of Huiqiao, there is a button to update the driver, you can click this button to update it and give it a try, if it is indeed because of the driver problem, the problem should be solved after clicking.

3. If it is neither a hardware problem nor a driver problem, then it is a software problem, and now there are some software that can shield the keys of the keyboard, no matter which key is pressed, it will not work. Because this type of software usually doesn't show up in the system tray, open the task manager and look for suspicious processes one by one in case they get into trouble.

4. If it is indeed because of a certain keyboard shielding software that makes the keyboard unresponsive, you can find this software, open the software and enter the relevant settings. For example, take a keyboard shield pants as an example, as shown in the figure. If there are a few keys on the keyboard that are different colors from the others, consider that these keys are causing the keyboard to sometimes not respond.

All you need to do is click on these different colored keys to unlock them.