Posted 24 June 2010 - 11:21 PM
I hate to be the bearer of bad news, but I believe your Motherboard is dying on you. You can do a couple of different things. Try resetting the CMOS, just unplug the power cord and take out the battery for a bit. Then see if it will boot, recognize USB etc...
To remedy the keyboard situation, hopefully there is a ps2 keyboard port in the back that you can plug an older keyboard into. I would try that, or another cheaper option would be to use a PCI to USB adapter to get USB support.
Side from that, motherboard seems to be going and you nay have to replace it. I'm not sure what else it could be. Maybe verify it from some other folks first, but i'm pretty sure that is your problem.
Is it still under warranty I hope??