Pc dosn't boot

Hi everyone!
I promised to try fix a friends PC. (PC is at my house hoocked up to my monitor)
Symthons are that the PC would just freeze after about 10 sec after turning on. This would only occure every now and then (usually after it's been used a lot). Sometimes the PC would just freeze while in Win 98. PC is very old and nor me or friend have a clue whats inside. All i know is that mother board is AT not ATX.
Me and my dad had a second Motherboard that we tryed to put in but it wouldn't fit in the case.
After putting the PC back together (not sure if everything is all correct) It wouldn't start at all: Hd would start spinning and CD drive lamp would flicker, but no image on the monitor.
There is no beep. Since the monitor dosn't seem to work (on my PC it does) I cant tell if it is actually frozen or if it proceedes (I think it freezes).
I think I might have fried the motherboard with static electricity?!

Please Help any suggestions would be very helpfull.

Thanks Dennis:

you might have fried the bios chip.i zapped mine awhile ago and that was the symptoms.everything was hooked up right ...fans and rest werked but wouldnt boot...no bios or anything.i bought another chip for 20 snapped it in and all was good.

you might wanna try to take everything out....pci cards n such so its just the vid card in and see what happens.it may boot into bios indicating a diff prob.

get the manual for the mb and make sure u have everything hooked up correctly.just a siggestion next time get a pen/papper and make notes and a diagram before unplugging wires.good luck

Hey thanks for your reply!
Well, i did what you said take out everything that is not necescery for booting. Sadley it still didn't boot. I'm pretty sure that i did fry the bios chip. I checked all the other Hardware and it seems to work. I also checked the wires in the manual, they should all be in the right slots (Next time I will make a sketch ).

I had some hardware at home (ATX MB, Video card, Sound card, RAM)
that I gave to my friend all he needs now is a ATX midi tower.
He's all happy .

Again thanks for your reply.

Dennis

ah, thats good to see this thread....i have the same prob on one of my pcs, but didnt know for sure what it was, i had but it down to damaged ide port, but it makes more sense that its the bios. my psu kinda went zap, and fried itself, and the video card, so after replacing those and about 50 bucks later it was running again, but i only got about 3 days use out of it, cause then it did this. ah well at least im nearly certain of what it is now, cheers fellas.