Some weeks ago my laptop started to crash on flash videos, then on other media files, and then (rarely) even without media file. The problems went so bad that it actually had trouble booting.
Also my Lenovo tends to overheat. On standard boot it would crash at about 60-70 Celsius on the processor.
After some research I realized that if I boot in safe mode (with a hack enabling sound) or in Linux I have no problem.
So it seems that it is something that loads on boot causing the problem. Any idea what it might be?