I would appreciate any help on a problem with my Dell Inspiron 8100.

After the blue Dell screen loads up, the screen goes blank and a single prompt is shown in the upper left hand corner of the screen.  The computer continues to run. 

I am unable to enter the BIOS using F2, Esc, or F8. (prior to or during the Dell screen).

All other periphals (printer, digitial camera, etc) are unplugged.

I've tried inserting backup/reinstallation CDs and floppies.  The system tries to run the CD/Floppies, but just continues going.

Any suggestions?