Need help on a BIG problem

I have a Nvidia GTX 650 and when i go AFK fr 1 min or more and i shake my mouse, The screen goes black for 2 second Crashes ALL games and Youtubes videos. I would need help on this Don't tell me to reinstal the Driver alredy done 5 times or saying it beacause of screensaver i've disabled it.
Thank you.

I don't think the video card is the problem, but did you try cleaning your PC? Maybe it's too full of dust. Could be this, fixed many of my problems many times.

This is totaly not this it started 2 month after i got it. Oh and i tryed with the air compressor and nothing came out.

Does your screen go black when you afk or only after peripheral interaction?

If it's before you touch anything it might be possible that your system is trying to sleep after one minute which could have been caused by an accidental change or a family member trolling. It does sound like the system is struggling to resume processes that were running.

Is it the whole PC that crashes and do you need to reboot to fix?

This is just when i got afk for 1 min or more then i shake mouse, screen goes black for 2 seconds the go back to normal but every games/Youtube videos crashes noting else after.

You can set in the properties in how many seconds the screen will turn black to save power, try settings it to 9999 seconds?

Yes, I would say that it may be trying to resume from a sleep. This can often cause crashes as the system tries to pickup where it left off. You can find the settings under Control Panel > Power Options.

Try that and let us know if it works if not then it might be the seed of a bigger problem.

I alredy said i disabled these one wow.And if i ask for help it beacuase i tryied the basics things.

When you go away, just put an autoclicker to click on the screen randomly so the screen won't become inactive and go black. That random clicking will keep the screen open.

This is the wrost awnser i've ever heard of my life.