So I had been running windows XP for quite some time now. I have an Opteron 165 with 1gb of DDR ram and a 7600GT. After awhile weird things happened that would lock the computer up. No reboot, no BSOD, just a frozen screen. It almost always happened with Itunes and my iphone, but it also happened a few other times. I assumed the hardware was toast. I tried reinstalling windows but it would repeat over and over again. Then I got windows 7. I thought about installing it on my screwed up PC since it wouldnt matter if windows 7 was crazy horrible. Here is the kicker though: it won't crash. It runs beautifully. I keep putting it through the ringer and it is working like I remember it use to work. It is smooth and fast and stable. I'm a bit afraid though. I thought it must be a hardware problem before, but how can I be sure that it isn't? I would really love to upgrade the ram and buy some new games.