ummm... he has an Asus A8N-SLI deluxe. that board has supported dual cores from day one. no bios updates needed. i have the premium edition of this damned board and i'm using an X2. only difference between the premium and deluxe is the premium uses a heatpipe design. that's it. they're identical.
-mpjesse
Look at that link-->
Asus CPU Support A8N-SLI deluxe and tell me that since day 1 the A8N-SLI deluxe has supported dual core...I had bios rev. 1001 when I got mine a year ago and the BIOS didn't support dual core.
Dude, if he got a board that was old stock it could have an older bios rev. why not just advise him to upgrade the bios so he doesn't end up with a non-bootable machine. then he'll have to take out his new cpu, put in the old one, flash the bios and then put the new cpu back in again. why not just avoid the hassle.
THE BIOS...NOBODY MENTIONED THE CHIPSET NOT SUPPORTING IT!!!!
and as far as the deluxe and prem. being identical..you're wrong again...you can select sli in the bios with prem....on the deluxe i have to flip a card that's between the two pci-e slots. then go into the bios and select sli.....get a clue bro...3000+ posts don't mean diddly if you give crap advice.