i have a packard bell computer that refuses to start. the other day the computer just shut down on me, now whenever i turn it on it goes through the post test with no problems but between 10 and 15 seconds later it just turns off. some times it get to the selection screen saying windows did not close down properly choose startup repair(recomended), normal, then it turns off
could be overheating and shuts down to protect itself. It does this if any of the fans are not working.
With pc disconnected from mains, open up casing, touch the chassis to discharge static, and give the insides a thorough clean from dust. Use a paintbrush to dislodge dust and hold a vac cleaner near to suck the dust up. Or get a can of compressed air to blow the dust out.
I think that the System Fies have been corrupted, I you have a Full System Operating Sys Disc you could start with it and do a Repair. This will not Work with a Restore Disc. first one does not touch your files but using restore cd will wipe the drive back to factory settings