maybe see if your computer is dirty on the inside..It could be overheating and just shutting off..My old overclocked computer would overheat while playing bfbc2 and would shut off just when the game got good..It is also summer so you never know.
//I like the Malwarebytes running off of a flash drive idea(used it myself many times)
and what is crashed..Is it the blue screen of death??
or is it just shutting off.
Check to see if the power cable in the back is loose.
Download "speccy" and see what your computer temp is.
Edited by unworthy, 11 August 2011 - 09:21 PM.