Trying to fix someone else's comp, so I'll post what i know...any sort of video/audio app's stutter when the cpu is tasked with something else, as simple as opening the web browser. The prime suspect is the CPU...the original call was that the comp was shutting itself off randomly, and upon opening the case I found the cpu fan/heatsink (p4) was completely caked with dust. The comp itself is about a year or so old, but should have no problem doing what it is. Drivers are up to date, and virus scans come back clean. Just trying to rule out any other problems before I point the finger at the cpu.