k i have a dell inspiron 1100 and the problems is that when i leave my laptop on for the whole night..it just shut off by it self. and yes i did the "power managment" stuff. they are all set to "never". but the weird thing is..it only happen sometimes. yesterday i was converting a Divx file(wich usually take's a day to process) and the next morning my laptop was off! so i did a diagnostic test. when it reached the "fan testing speed" my laptop went off?? so i turned my laptop on and did again the test but only for the fan and it passed. now i want to know...do i have problems with my fans?? my high rpm speed was: 5806 my slow rpm speed was" 4191 can anybody help me out? this is a very anoying problem since my laptop shut off by itself and i lose all my files!