If this is the same machine from the other posts, it may be time for a new machine.
From what I can understand from your post, you may need to flash the BIOS.
http://www.pcnineoneone.com/howto/biosflash1.htmlI wanted to insert a hyperlink, this should get you started, make sure you note what kind of BIOS you are currently running. (Phoenix
http://www.phoenix.com/en/Home/default.htm is probably the most popular). American Megatrend
http://www.ami.com/is another popular one.
Happy hunting.
John