Hi. About a year ago, a friend helped build me a new PC using some old PC parts he had. It worked great up until now, though.
So today, I leave the computer to grab something to eat from the fridge, but when I come back, I find my monitor display all... scrambled. I guess that's the way to describe it. So I ry to ctrl al del, then alt-tab, and I get nothing. I assumed it was my computer, so turned it off and then back on. However, immediately, my monitor began to display "no signal". I checked the cables, made sure they were nice and secure. They were. I switched between a DVI and VGA connection to my video card, and both displayed no signal. Thinking something might be wrong with my PC, I opened it up, cleaned up the bit of dust there was, and then with the case still open, turned it on. Now, the fan on my GPU was still working, so I took that as a roug sign it was still working.
Thinking it may be my monitor, I took it to another PC in the house, and it worked just fine.
Now, I'm not great with computers, so the only thing I can guess is that the card was overheating (it's very hot in my room, but I turn the PC off every night), or maybe fried, the cables I was using are messed up somehow (even though they're brand new as I got a new monitor just a few months ago), or I need to update the driver, as for the past few days Catalyst kept trying to update but I kept pushing it off. I guess the next step would be to find a spare video card and try that on my PC, see if it works. But I could really use some advice from people who know a lot more than I.