My computer has a black screen and a sound when I turn it on, what should I do???

Is the voltage stable over there? Unplug the cable that connects the computer to the monitor and see if there is a display. If not, it's a problem with the display.

It could be that your computer has been too long and then the graphics card is damaged, and you can go to your local laptop repair station to get it repaired.

It's a buzzer alarm, 7 sounds is an abnormal processor, maybe the CPU is broken, although the probability is very low, but what if? So finally thinking about this situation. Are you sure the CPU fan power cord is plugged in?

So I finally thought of this scenario. Are you sure the CPU fan power cord is plugged in? There is another different scenario where something is wrong with your system. The easiest way to do this is to format it. I wish you success.

It is recommended to shut down the computer first, try it may be that the program is too messy, the computer is too stuck, it really doesn't work, go to the 4S shop for maintenance.

It is recommended to take it to a repair shop to get it repaired.

How to recover a black screen in a notebook.

1. Restart the computer and press Ctrl+Alt+Delete.

2. Press FN+F2 to toggle the black screen back to normal.

3. System problems, keep pressing F8 when booting up, enter the system operation menu, select "* Correct configuration at one time", and restart the computer.

4. System problems, press F8 after booting, enter the system operation menu, select "Safe Mode", click "Start", "All Programs", "Accessories", "System Tools", "System Restore", the System Restore dialog box appears, and then select "Restore My Computer to an earlier time".

5. Use the system installation CD, put in the CD-ROM drive, restart the computer, and repair the current system.

6. If the virus Trojan causes the computer to suddenly go black, you can try antivirus software.

Notebook black screen reason.

There are many reasons why a laptop has a black screen, the main ones being that the monitor is damaged and the motherboard is damaged. Of course, the phenomenon of black screen can often be seen, if your laptop is used for a long time, it will cause damage to the graphics card, poor contact, and parts because of the high temperature and the screen can not be displayed, or artificially destroy the computer, so the phenomenon of computer black screen will appear. This phenomenon is not terrible, and there are many ways to put your computer back to its original state.

Summary. Hello, dear. We'll be happy to answer for you. Dear, the computer screen is black, but there is a sound when the machine is turned on; It should be the computer's VGA cable that is in poor contact or loose, causing the computer to have a black screen failure.

The computer screen is black, but there is a sound when the machine is turned on.

Good afternoon, dear! I'm glad to be able to answer for you, typing takes a little time, please wait a minute, I'll give you a complete answer!

Hello, dear. We'll be happy to answer for you. Dear, the computer screen is black, but there is a sound when the machine is turned on; It should be the computer's VGA cable that is in poor contact or loose, causing the computer to have a black screen failure.

Pro, it should be the computer's VGA cable is in poor contact or loose, causing the computer to have a black screen failure.

I checked to see if there was any loosening.

Dear, it should be the oxidation of the memory module or the oxidation of the graphics card.

The mouse also does not show up.

Dear, there's a way to shut it down.

But there is a song in front of it, and now the screen is black, and there is still a sound.

Don't dare to shut down.

Dear, it is recommended to restart the computer.

What to do if it restarts.

Dear, if you still need to call a professional to come over for maintenance.

Dear, restart the computer and keep pressing F8

Good. <>

I hope I can help you above