i was installing a new floppy drive & something went wrong. system hangs with just the P-4 picture on screen on bottom I have choice tab to show post or del to enter set up. Problem is tab w/not show post nor will del enter set up. I reset cmos, I repluged in everything one at a time. I held ondown the tad a power up it showes on post only processor and memory & when I held down del at power up it says set up but thats it nothing happens.I'm totally lost can anyone help me?