To be honest I doubt it's your BIOS causing the problem. More likely it is caused by bad drivers or faulty hardware.
If you have changed anything in your computer recently or updated any drivers try undoing it to see if it helps. Also, try updating to your latest drivers.
You don't specifiy which operating system your using, so I asume it's windows. If so try booting into safemode to see if that helps, as this uses a default, safe set of drivers. If you can get to safemode ok then the chances are it's a software, rather than a hardware problem.
Nick, September 2004