Windows 7 will not install PLEASE HELP!!

Hi Everybody,
I'm about to go insane and throw components out of the window at pedestrians. Please can somebody enlighten me?

Problems start about 3 weeks ago with random BSOD and crashes. Finally figured it out to be the PSU. RMA'd to Coolermaster and they've sent me a shiny new one back.

Great I thought so I installed the PSU last night and this morning I decided a fresh install was in order to celebrate.

Bad idea.

I have tried to install Win7 X64 in various flavours 14 times without success. It always self destructs after the first reboot. I get a your computer has an error contact your administrator. It doesn't specify a dll or source.

I have tried 32bit just to be sure and that also stopped in the same place.

The thing is I have installed on the computer about 10 times previously with no problems. So I know the drivers for the RAID array are fine etc.

The only thing which has changed is the PSU (same model as before, just a different unit)

I have just tried again using my backup PSU which powered the system for 2 weeks and the same error occurs.

I have stripped to the barebones, removing RAM/HDD etc, swapping ram banks etc - no luck! All USB removed... All the usual and no luck.

Hardware

Coolermaster real power m 700w
AMD 555 BE CPU
MSI 890FX MB
8GB Corsair XMS3 1600 ram - now running 1x2gb strip
3xHDD
2 of which are in RAID 0
2x 4890 cards - now only 1
Loads of fans
Nice Cooler Master big boy case

As mentioned has worked fine for 3 months plus in the past

Tried un-raiding and no luck.


Now the kick in the balls is that Vista installed no problem and linux live cd ran sweet too.

Tried 3 difference Win7 disks and 1 dodgey homebrew version.

Temps/volts all ok.

What the fluff?

Please help!!!

Another note I have cleared CMOS and just to be sure I removed the battery too.

Hi Rich,

Yes and yes.

Only mouse + keyboard plugged in.

All extras in BIOS disables (sound lan coms etc)

Repartitioned and formatted on pretty much every attempt.

Thanks

I've ruled out the memory with memtest and using 1, 2, 4 sticks in various slots.

Have also run in bare config but still crashed at the same point.

Motherboard could be a possibility, only a couple of months old. Was working ok after the PSU problems so assumed it wasn't damaged and everything was running ok / vista runs ok / memtest etc

I usually run it unlocked to 4 cores at 3.9ghz but dropped it back to stock 2 core 3.2ghz.

Thanks