Dell Inspiron 600m laptop, w/ 1400 MHz Pentium M 'Centrino' processor.
My computer will frequently shut off completely if I bump it or move it, such as if I lift it off my lap to move it onto the coffee table, or vice-versa...it's very irritating. Pretty much a complete power off with no warning. Usually, I can start it back up, but sometimes I can't...I'll keep bumping it and trying it again, then leave it for awhile, and it might boot up easier next time I try.
I've been trying to troubleshoot this for awhile, so I'll give you a bit of history. A few monthis ago, I joined the GIMPS prime number search, which is a distributed software program that keeps the CPU at 100% utilization. Because of this, I'll typically leave it running for long periods.
I don't want to rule out temperature problems because of the above fact, but it vary rarely, if ever, shuts down on its own while unattended. I'll come home from work after 9 or 10 hours and it'll stii be running from that morning. However, I'll pick it up to start using it, and it'll die. Also, today I turned the program off to see if it makes any difference, and it still shut off.
Also, a week ago, I completely disassembled and reassembled it to see if I could find/fix the problem. It seemed more reliable right afterwards, I had cleared a lot of dust and lint out of the cooling vanes, but within a couple of days it was back to its own unreliable behavior.
If anyone know anything I can check to see if it's causing a problem, I'd really appreciate. I really like this laptop, but as of late, it's becoming almost unusable for fear that I'll lose my work suddenly without warning.