I have a Vaio that had a loud fan speed problem. I found a post online that said to go to the Windows advanced power settings and set the CPU power to 99% to make it slow down. It actually worked. Something about not letting the Intel Duo core chip go into turbo mode, which keeps it cooler.
Yep that prevents turbo which stops it from shutting down. Crippling the CPU is a pretty annoying fix, though.
Switching to the onboard Intel GPU works as well, but that means foregoing hardware decoding which means a bunch of things run like glue. I actually ended up just replacing the fan which solved the issue for at least another year until I can get a new copmuter.
