Basically I've had this problem for a year or so. I do a lot of things on my computer, i.e. video editing, 3d programs, gaming, etc. and I think it's about to crack. But I only got it a little over a year ago. So I no understandy, 
It will freeze or lock-up, ( i dunno if theres a difference,) for anywhere from a couple of seconds to a couple of minutes when I'm in ANY program, or no program at all. I've reformatted once, and the problem was fixed for a little bit, but then continued to crop up once I started playing Counter-Strike: Source again.
The other thing that is letting me know something is deeply wrong is that when I turn on my computer, it makes a harsh whirring noise that lasts for about 5 seconds, and the computer will take anywhere from 5 to 15 minutes where it's doing literally nothing it seems like, and THEN boot up very slowly, and when it's finished, my computer runs everything very slowly. I have to restart windows and it's fine. But I freeze every once in a while then, MAINLY while i'm playing games, or running other high-intensity software.
I guess what I'm asking is, are there any hardware fixes that I can do to resolve this problem, or is there any piece of hardware that is central to this problem.
I have a p4 3.2 w/ HT, 1 gig of ram, an ati radeon 9800 pro with 128 mb running omega drivers, a 120 gb hd, don't know the manufacturer for it. i have service pack 1.

It will freeze or lock-up, ( i dunno if theres a difference,) for anywhere from a couple of seconds to a couple of minutes when I'm in ANY program, or no program at all. I've reformatted once, and the problem was fixed for a little bit, but then continued to crop up once I started playing Counter-Strike: Source again.
The other thing that is letting me know something is deeply wrong is that when I turn on my computer, it makes a harsh whirring noise that lasts for about 5 seconds, and the computer will take anywhere from 5 to 15 minutes where it's doing literally nothing it seems like, and THEN boot up very slowly, and when it's finished, my computer runs everything very slowly. I have to restart windows and it's fine. But I freeze every once in a while then, MAINLY while i'm playing games, or running other high-intensity software.
I guess what I'm asking is, are there any hardware fixes that I can do to resolve this problem, or is there any piece of hardware that is central to this problem.
I have a p4 3.2 w/ HT, 1 gig of ram, an ati radeon 9800 pro with 128 mb running omega drivers, a 120 gb hd, don't know the manufacturer for it. i have service pack 1.