Dell Dimension 4600 PC Desktop "spply" Questions

Manufacturer-spplied hardware support disk can't install my software... the computer (dell dimension 4600) always ask for the manufacturer-supplied hardware support disk..............but i haven't ...

PC WON'T PWR. ON, GREEN PWR. SPPLY LIGHT JUST FLASHES. DO I HAVE A BAD P/S OR WHAT. Maybe but try searching for computer error codes on the net. Listen for the "beep's", count them and that will give ...

...somthings shorting out the computer seems to me if its doing this the problem my be the psu (power spply unit) id if i were i would reset the bios too hoppe this ...