The RAM exchanging was the last recent hardware changes that I did on my computer and aftre I did that, there was no problems occurring. The day after or two day after, I started my computer up in the morning and everything seemed perfectly fine and I played a video game and after about five minutes it crashed and I opened task manager to close it but then it froze too and my desktop icons were gone so I had to manually turn my computer off. I use Windows XP home edition and my motherboard and processor is AMD and it's running at 2ghz. I have 736 mb or ram. Anyway aftre that I tried turning my computer on and it didn't get past the HP splash screen while it was supposed to be booting but never did. I then started waiting for a few hours and would try to turn it on again and sometimes it would work like that. But my computer wouldn't recognize the hardware and other things that are installed. It's kind of wierd but as like right now when it's working, I can do small things like going online or viewing my documents and such. If I start a program that uses medium to a good bit of processing power, then my computer will freeze and I won't be able to do anything. Which made me think that it could be my processor but it's supposedly good. I remember going online yesterday and used a ram monitoring program and that said that I used 20% of what ram I had for a few minutes online. Now that was some serious power consumption!! Today when my computer was running, my cd rom was recognized and after a few minutes it somehow wasn't there. So there is all sorts of bad things happening. Oh and another wierd thing is that when I turn on my computer, obviously the cd rom will turn on since it's a top priority but I've noticed that it would still run even when my computer didn't even recognize the cd rom. So I don't know what caused that.