I recently bought an ASUS A7N8X MOBO with an AMD XP1600+ processor. When I power up my system, everything seems fine, I don't get any system errors or anything. Whenever I try to go into my BIOS, I'm maybe in there for like 1 minute tops until my computer totally shuts off. I can turn the machine back on with the same results. I can't even stay in the BIOS long enough to make any changes. OMG please help me!