PC Won't boot now! D bracket showing all 4 leds red!

Ok this has got me stumped, on top of all my fan speed problems now that I have installed Windows 7 Ultimate x64, last night I found that my PC now WON'T BOOT AT ALL!!!!!!!!!!!!! ? The D bracket is now showing all red leds, which according to the manual, it means either the CPU is damaged or CPU is not seated correctly. But how can this be? I haven't even touched the CPU!?
Anyway, I have already tried removing the heat sink and reseating the cpu but it is still showing all 4 red leds.
This morning I tried booting it again but now I noticed that it is showing 2 red and 2 orange leds. What does the orange colour indicate?
I've also tried clearing the CMOS - no change.
I am completely at a loss now as to how my PC can all of a sudden just become totally unusable!? Is it the fault of Windows 7? Does Windows 7 somehow require more power to the CPU which may have fried it?
What can I do now?
CPU: AMD Athlon 3500+ Socket 939
Motherboard: MS-7100 MSI K8N SLI Platinum
Memory: 1 gig 2x512 sticks of DDR2 OCZ
Video card: gigabyte geforce 8600gt
Hard drive: 1x WD 74Gig Raptor, 1x WD 320 Gig Caviar
OS: Windows 7 Ultimate x64
PSU: Antec True 480Watts

Quote from: chef jeff on 11-November-09, 22:31:50
Have you tried another processor? With your fan issues it concerns me the processor my have gotten too hot.
Yes, this is certainly a possibility and I haven't ruled this out yet. However the problem is trying to find someone with another socket 939 cpu and mobo. I know someone who has a Shuttle PC but he majorly cbfed taking it apart and trying my cpu out.
But even if the processor got too hot, why is the D Bracket showing 2 red and 2 orange leds. Shouldn't it be showing all 4 as red? That's why I still believe the BIOS maybe corrupted as well.
Anyway, I'm getting in a technician today so hopefully he will be able to try it out somehow.

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PC Won't boot now! D bracket showing all 4 leds red!

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