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A few weeks back my computer quit working after I had incorectly shut it off via hitting the switch on the power supply. It would stall at BIOS boot After checking a bunch of things (unplugging everything, but the mobo, changing PSU's) I couldn't get it to work. Well today I was showing a friend and it worked. I had my mouse and keyboard unplugged (both USB) and that was the only difference. When we plugged them back in it still worked. I played with stuff for a bit and then it didn't. Everytime it didn't work, I would just turn off with nothing USB plugged in, turn off, and replug everything and it would work. I'm thinking maybe it's a loose connection in the USB. I'm just wondering if maybe I am correct. I have a new mobo I could put in it if I want, replacing it is an option, and I probably will. I just want to know what is wrong with it.

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MSI K8N Neo 4 Platinum
AMD Athlon 64 3700
XFS 8600GT
Maxtor Maxline III 250G
1G Corsair Value Select
Monitor 1- Viewsonic G90F
Logisys Dracula Case

Praetor

Well it would seem like the USB (as wierd as that may sound) would be the culprit although i dont know exactly what things you've checked so i cant say for sure

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ASUS P5K Premium WiFi-AP, Q6600@3.7 / ASUS P5ND, E6400@3.8
4GB OCz Platinum XTC 8500 / 4GB CorsairXMS2 6400
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