I am working with HDV footage, using speed changes, MB looks plug ins. If i try to render an entire time line of est. 10 min, cannont render. shows non responsive, and closes or I get error compiling. I have updated as of today all nvida drivers, the new patch out for pp cs3. I am on an xp machine. I can edit most of the time with minimal crashes, however getting it off my system is impossible, it just crashed again!
This is what happened to me. Same problem. Fan not seated properly on the cpu. Soon as I started rendering HDV Cpu would heat up and turn off to protect itself. Reseated fan and no problems eversince. Other less demanding programs ran fine. Only when rendering hdv did it all fall apart. Hope its that simple for you.