HELP! my computer had a heartattack!

[callen]

Hey guys, I know that this is one of the best places to come for advice when I have a computer problem since there are so many very knowledgable ppl here on JW... so here goes.
Today we had a short power outtage. When i went downstairs to go and turn my comp back on it would start, but i wouldnt hear those familiar beeps when it starts.....once, and only once i got the beeps and it started up but it only got to the windows XP load screen and then the monitor shut off. so the power is on the fans are turning but no visual. So when i turn it on to begin with i get the flashing read light (which i assume says it is thinking) but this only happens for about 3 seconds then nothing. The comp continues to run, but nothing is happening and I see nothing on the screen. Now i asked a friend and already had a look at the capacitors(or whatever you call em) on the motherboard to see if they were shot, and they look ok. Now i cant understand how it might be the power supply becuase the computer runs, but it just doesnt 'think''...... so I am kinda lost right now.. I still need to try a different monitor tomorrow, but that should not be the problem cause i have been using this one without a hitch for months now... I also need to try and get a windows XP cd in which i can try and repair files (which the girl i spoke with suggested as a course of action) but I had a DELL reinstall disk of a roomies in which i put in my comp and didnt get NETHING. (btw my comp is not a dell) any advice would be great guys as I am stuck in the middle of exams without a computer. Thanks a million in advance
:cry: :cry: :cry: :cry: :cry: :cry: :cry: :cry: