I have absolutely no idea where to turn next! I have a computer with parts strewn all over the place. I am ready to start tossing pieces into the street!

The computer started being strange last night. Restarted itself after blue screen and shutdown

Then I have tried to troubleshoot the issue and am now left with a motherboard that powers on but will not boot any hard drives or cd/floppy drives. I have tried numerous powersupplies, I do not get any beeps when it powers on...any ideas!!!!HELP.....

I think I am going insane.