trying to format a hard drive,I fooled with the "settings". when I try to start the computer and get back to the "settings" screen by tapping the F2 key,I get a beep and the Dell logo splashed briefly(1 second) across the screen, and then a cursor.I can see the "loading" bar at the bottom, but, it does not run all the way across. tried to boot the bios from floppy but that didn't work.I may have turned off all the drives,oops. This is an Optiplex Gx1 with an A10 bios. Any help would be appreciated. Thanks!