Read the reply to http://reviews.cnet.com/5208-7587-0.html?forumID=69&threadID=94759&messageID=1073054 and try that cleanup.
I know its asking a lot, but the make/model/age could reveal insight. Here's why. Some models have known issues with the heatsink lifting off. By disregarding the forum tip and not supplying all the needed information you don't get the best responses.
Hi I have a problem with my laptop and was wondering if anyone could help me.
The problem with my laptop is that it shuts down randomly. It goes dead suddenly- without warning.
-it turns off at different intervals (once after 30 min of use, once after 55 min)
-once turned off before windows could start loading during startup(bios loading stage)
-checked processor temp (was at 62 degrees before it turned off)
-went into bios, changed processor speed to low- still turned off later
-turns off when on ac power only, and when on battery power.
-fan works when laptop is turned on, and seems to work fine while laptop is in a windows session.
I have strong suspicions that this might be a hardware issue. Any comments will be appreciated.