This is the latest BIOS for the P5B Deluxe
http://dlsvr03.asus.com/pub/ASUS/mb/soc ... BD1226.zipIts exaclty 1MB so it will work on a floppy. Most of the older chipsets still have small BIOS files. the newer ones are very large. The USB stick would be the easy way to do this, although I am reading a downgrade may not be possible, only upgrades using a flash stick.. still reading though
There are 2 manuals one dated 03/22/07 and another dated 04/24/07 but the basics appear the same.
I need to see the BIOS number the board is currently running. Use the utility I posted above to get the revision of the board and the BIOS.
EDIT: One other thing too... check the memory tab in that tool and post the exact model number for the Gskill sticks with theior timing specs (SPD, dropdown box and memory tabs). If its easier, just snag an image of the tabs and I will look them over. I want to research the memory before we do anything.