Coolers discussed above. See my reply above to Scott100 regarding aftermarket VGA coolers. Interesting. I haven't yet seen a device that uses the PS/2 keyboard Interrupt (IRQ1), so I doubt that's the problem... though I don't know what kind of KB you have. How old is the keyboard? I suspect the KB has just gone bad. A replacement is less than $10, so you might just get something new anyway. It certainly seems to be a problem.