Falcon, you got it right again.
I contacted HP, and the guy was able to give me a hand, even though my warranty expired. According to them, it’s not my systems board/motherboard, but rather, the fact that I have Windows 7 and a newer graphics driver installed.
I was originally going to wait it out after being skeptical about what MasterP said, but then I got scared when more problems started happening, such as these faint horizontal gray bars(kinda like what you see on CRT screens when they’re filmed, except more of them) moving from the top of the screen towards the bottom. So, I called HP. Basically, I had installed this new graphics driver(released this past december) for my video card, the nVidia 9200M GS, and lots of games I was playing, such as GTA4, Mass Effect 2, etc… were running a lot better. Turns out that my PC, built in late 2007, doesn’t support that driver. I installed the driver I was supposed to have(released in 2008), and the games ran slower, but the bars disappeared. Also, I had installed Windows 7 around December, and in retrospect, I think this is when the problems started. I still deal with an occasional white screen, but I can’t get vista again, since I don’t have a recovery disk.
Also, I had a crapload of dust in my fan, and I couldn’t hear the screwed up sound of the fan running because I use a fanned cooling pad(the noise blocks out the sound of the built in fan), and my computer was nowhere near overheating because of it.