Windows 7 x64 SP1 4GB RAM, 500GB HDD, Creative Gamer Soundcard, 2.4Ghz Core 2 Quad, nVidia 8800GTS graphics card I am in need of urgent help. I am an IT technician and I cannot diagnose this problem at all! Basically, my computer keeps skipping (freezing for a second, and then resuming constantly). It happens randomly, but a few times every few minutes. My sound also skips really badly when I play music. I have uninstalled and reinstalled my sound card and graphics card drivers. I have also reinstalled my operating system (to see if that would solve the issue) and it has not. This tells me its hardware, or a program that I use regularly. However, my main question is, how do I work out whats causing it?! I have scanned my computer with 3 different anti-viruses both before and after reinstalling the OS and they all came back clean. I have (and mainly use) Firefox 7.0.1 and iTunes 10.5.1. Before I open any of these programs when my computer starts up, it starts to skip. So surely it could not be these? I am really stuck on this guys and girls, so any help would be greatly appreciated. If you want any additional info, I will gladly assist! Thanks in advance!