could this be a graphic card problem or a virus?
 

Just today my comp started to act strangely.

After 20 minutes of work it freezes and I have to reset it manually because nothing works anymore (mouse, keyboard). First I thought that it could be a virus or something but I also found out that my monitor frequency changes by itself. I have an old graphic card (NVidia GeFore 2 MX 400) so maybe this is a problem.

What do you think?

install latest drivers.

I am having the same issue with one of my boxes right now.

I reformatted and reinstalled WinXP and it's still happening.

I'm at a loss as well.

monitor frequency changes too?

I didn't touch anything and then started to have the problem. Didn't suspect the power supply, had that issue in the past.

Gonna have to try updating the drivers, but I know I was up to date prior to all this going down.

Most likely a hardware problem... your graphic card or so, or even your cooler.

Carl

Sounds like a video card problem or monitor ( or cpu overheating )

1st you check your CPU FAN, abd then the rest !!!!!!!!!!

I yanked the same graphics card out of my computer last week. The GPU fan was running really rough and loud. I thought it was my hard drive crashing, but it was the GPU fan on the video card..
I never had it change my monitor frequency, but you should update drivers as suggested I'm sure, and possibly open your case and make sure the fan is running and the heatsinks not overheating..

I had the same issue a few weeks ago and it was the video card. They seem to be the first thing to go because of heat.

Sounds like it get overheated, check your cpu temp...

Your CPU's overheating. I had the same problem. Tried all of the suggestions on video card and such, but to no avail.

The mobo is shutting down (you see this setting in config) because you are overheating. Either you have a fan that has gone out, not functioning properly, or something to that effect.

Best advice, take it in before blowing out your mobo and video card, also install a 2nd fan.

:thumbsup

Just yank off the case, remove some extra card blanks, fire it up and observe.

If you can fry an egg on it, it's too hot.

Clean off your existing fans as much as you can too. Some gunk that builds up cuts down the efficiency pretty badly..