hey i've got a bit of a problem with my girlfriends acer travelmate 2424. In the last two weeks it has been turning off from time to time. 20-30 minutes after being turned on it just turns off without any notice. It happens while running on battery power or the main power supply. If the laptop is turned back on immediately after turning off, it turns off during boot-up. This morning when she's turned the computer on, she got the message: "Windows could not start because the following file is missing or corrupt: \WINDOWS\SYSTEM32\CONFIG\SYSTEM" Now I'm trying to use recovery console on the win XP CD, but it keeps turning off before I get to the recovery console. My idea is that maybe the cpu is overheating because of dirt inside the fan or something like that. Do you think that is a likely reason for the turning off problem? I'm not sure weather I should try to open it up and try to clean it, because if it's not because of the dirt, but because of some hardware failure, then the warranty probably won't cover after I've opened it up. The laptop is almost two years old, and the warranty is 2 years. Can you say anything about weather it's more likely that heating is causing this problem or weather you think it's hardware failure?