I have a toshiba Satellite 1905-S301 that randomly shuts off. It only does this when I am surfing (but only oncertain websites), streaming music, video, or doing 2 or more CPU intensive things at once (surfing and using Winamp, for example). It also shuts down when I try to perform a disc cleanup, scan with Advanced System Care, and towards the end of a CD burning process with WMP (never in the middle, always JUST BEFORE I get the damned thing burned!). After this happens, I can turn it right back on, resume what I was doing, and it's fine for a while until the CPU gets too busy again. This problem has occurred with the machine for over 2 years now and it works just fine, except for this one issue. If the machine is turned over with the front of it facing you, the part of the bottom that would is at the upper right hand corner gets extremely hot when this happens, which leads me to bleieve that the CPU is the culprit. Is there any way to fix this without taking the machine to a computer shop? Funds are rather tight right now and my newer PC just crapped out! PS: I have tried blowing air into, AND vacuuming out the fan and vent areas, to no avail.