Heads up.. Do not do what the above post recommends. That procedure is just plain wrong and could make things much worse than they are now. You should NEVER run aflash or any other bios upgrade from your hard disk, and you should NEVER get to the process by ANY other method beyond a specifically created BIOS BOOT DISK. This disk must NOT contain an autoexec.bat or config.sys file, but rather ONLY the system files.
As for clearing your BIOS, there are two solder contacts next to your battery label "CLRCT". WITH THE POWER OFF AND THE POWER CORD REMOVED, you can touch these contacts together using a regular screwdrive. By bridging the contacts together for about 3 to 5 seconds (NO MORE THAN THAT) you will clear your settings. To see exactly where they are, look on page 14 of your owners manual and find the battery, from there you can't miss them.
This will clear the CMOS settings and should get you through the POST.
Steve Benoit
Stable Technologies
'The way IT should be!'