I think you have some terms mixed up
no worries: can oyu clear this up for me:
what were you doing before it went off?
You were in the BIOS? - that means there was a screen in front of you with various options. Depending on the make of your PC or mainboard, it may have been a grey or blue screen traditionally.
The BIOS is sometimes referred to as the CMOS. Its simply a set of instructions that are held in a chip, and the battery makes the chip remember them. So IN the BIOS means in the setup menu.
-Or were you doing something in the PC case (apart from putting in the AGP card)
You changed something from AGP to "on the motherboard"? It should only have an option from AGP to PCI. If you did "clear the bios" correctly (with your jumper change) then that should put everything back to defaults - you should see a picture.
You put an AGP card in the PC.
Did you take anything out - ie swap a PCI card or another AGP with this new one? If so, pop it back in, clear BIOS and try again! ALWAYS MAKE SURE CABLES ARE CONNECTED CORRECTLY!
If you did not remove anything, then the monitor MUST be able to plug into the port on the motherboard, as well as the new AGP. Remove the AGP and clear BIOS, then make sure the monitor is plugged to the motherboard port.
If all that fails (assuming you are CLEARING THE BIOS correctly) then you have a hardware problem of some sorts.
There are BIG agp cards out there (speed terms). Some motherboards cannot support them. It could draw too much power, and may kill ANY part of your PC. Maybe the hard drive is dead. Don't want to worry you, but I would MAKE SURE you are clearing the bios correctly!!
on another note, I'm off on holiday to portugal... so i'll see you guys in two weeks!!
hope you get the problem resolved!