DFI NF4 CPU detection, HELP!

[Blitz KriegeR]

Hello, I?ve got a slight problem with a 939 system, and I?m looking for a second opinion of the problem. I?ve never dealt with 939 before, so any advice would be greatly appreciated. (Went from 478 Northwood --> 775 Core 2, just incase you?re wondering!)

The system is new, a DFI nForce 4 Ultra board, with an AMD 3700+ (San Diego) CPU, and OCZ RAM / PSU.

The system hangs on power up, no post, there is no activity at all. It boots, lights turn on, fans spin up, and then it sits there.

The RAM and PSU both work in other PCs, so I know that?s not the problem, I?m wondering if it is a CPU problem, or a BIOS problem? I?ve read that these NF4 boards sometimes require a BIOS update to run the 90nm Venice/San Diego CPUs.

For NF4 owners: The little 4-light diagnostic LEDs at the bottom left corner of the board hang with all lights ON, which the manual defines as ?System Condition: Start-Up.? It never reaches 3 lights, ?CPU Detected?, two lights, ?RAM detected?, nor one light, ?VGA detected.?

All of the above lead me to a CPU problem, but is the CPU defective or is the motherboard loaded with the old BIOS that will not detect the San Diego reversion CPU?

Many thanks in advance, any tips appreciated.

 

[JMWarren]

It's probably a BIOS issue. Check out DFI-Street and download the latest bios and post your question there. These guys will help you out for sure.

With these boards its usually ram that does it but you'd have a three light condition.

 

[Thor86]

Check out this most comprehensive guide to using/setting up DFI NF4 boards thread.

http://www.abxzone.com/forums/showthread.php?t=88699

 

[WildHorse]

I have this same motherboard. Suggest you try this:

thoroughly clear CMOS:
physically disconnect power cable, press start button to help drain capacitors, pop out button batttery, move "clear cmos" to its "clear" position, let sit overnight

After letting it sit like that a long time (for as many hours as you can stand it) the replace all, & start out with only 1 stick of ram in the orange slot farthest from cpu, nearer top of board.

then boot into BIOS

set all to optimized defaults, save, exit, reboot.

As soon as you can get onto the web. see about downloading any updated driver for that cpu.

CMOS Clear procedure