My computer (a gateway 825GM) had been working fine for the last year and a half. Yesterday it randomly rebooted on my twice in a two hour period. I then turned it off and went to bed. I went back to use it today and the computer turned on for about 3 seconds and then shut back off. The fans did turn on and it did seem that the power supply turned on as well but then it just turns off. The blue power light does stay on though for some reason. Can anyone gives me some ideas as to what might be wrong? I'd like to think it's the power supply as I can replace that cheaply but given it turns on briefly I can't imagine that's it. Would appreciate the help on this. Thanks.