I have a three year old Inspiron 9200. Has been perfect until now. Installed Vista Ultimate 5 months ago. No problems. Last night my 11 year old son was using it and running Action Replay for Nintendo DS. Not sure what happened when he was done. The system was off when when I went to start it. The indicator lights came on but no sound from anything. After 5 seconds the system powered down. Could this be a bad CMOS battery or not. I pulled the battery today and voltage checked it. It showed 3.25V. It is rated at 3.6V. Any help will be most appreciated.