Hi, I'm having a lot of computer trouble right now and could use some help. A couple days ago I was watching a video on my computer and all of a sudden it froze, replaying the last second of the sound over and over again. I could move the mouse around but couldn't click anything. I had to manually restart the computer. This has continued happening, and while trying to fix my problem I must have done something wrong because firefox stopped working, and IE closes as soon as I open it (about half the time). I managed to get firefox up and running again, but the freezing continues. I have done system restore, a memory check (I think that's what it's called), chk disk, registry mechanic twice, malwarebytes (on my second scan now), and virus scans (more than one with different programs - mcafee and trend micro). It's weird what keeps happening. Sometimes it happens when a video is playing, sometimes it does it for no reason. I let a video run last night to see how long it would last and it had no problems. When I played a few others it froze after a few minutes. This is driving me crazy because it doesn't seem to have to do with any one particular thing. I tried to open a zip file and it froze. I'll open firefox and it will freeze. I'll try and watch something, and it does the same thing. Also, control alt delete doesn't work. At first when I did it t he little green box would show up on the taskbar but it never actually showed up. Right now the scans are running in safe mode. I have windows xp. Please help me!