System specs lanparty ultra-D nf4, a64 3400+ 2x512 OCZ ddr2, in the "orange slot" ati hd2900xt in pci-e with the big row of jumpers on the motherboard set to 16x single card.

I'm having trouble getting the bios settings to take; when I select save and exit, the sytem apears to restart, then I get a black screen, no beep codes, 4 red diagnostic LED's and one RED led on the top/back edge of the ati card. Once I clear Cmos, and restart, everything posts fine and it says "bios checksum error" defaults loaded, press F1 to continue or pres DEL to enter setup, if I press F1 it procedes to the boot menu, I don't have any drives installed, so I end up pressing the "reset" button. After pressing reset, the sytem goes to the black screen and I have to clear cmos to get it to post again. if I go into the bios config/setup after clearing the cmos, I set the CPU/FSB/DRAM, when I click save and exit, it goes back to the black screen... I have not used a dfi board before today, so I'm not familiar with the bios configuration. I am currently looking through the manual PDF, however, I only have one PSU to use between the two systems, so I can't be on this computer and the DFI at the same time. I'm looking for recommendations on bios settings that I can print out for reference, then take over to the other computer. This is a second hand nf4 board, with a couple custom "bios profiles" in the bios setup menu, I'm fairly certain that the bios profiles are being loaded, and I don't have the same CPU that the previous owner had.. I am going to contact the previous owner for suggestions on configuring the bios/profiles, but any help would be appreciated.