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2 x GTX570's dead? **Video inside**

It will be one of the constants that haven't changed;

Motherboard
PSU
Monitor
(outside chance of memory - being worked harder by a more demanding GPU)
 
I've tried different memory
3 x 2GB Trident 2000Mhz 9-9-9-27 and
3 x 1GB OCZ 1333mhz 8-8-8-24

Same issue with either set...

Tried drivers 266.58, 260.99 and 263.09, same issue with all drivers...

Will be stripping my PC down later after work, thanks for the replies guys :)
 
Definitely points to a PSU problem imo, 850W should be ample for your setup but the unit from all the evidence presented is imo faulty.

A couple of things you could try to eliminate any mains power issues:

Have you tried the PC at a different mains power point in the room? shouldn't make any difference I know but I've recently had a power point that caused strange behaviour in whatever was plugged into it, cut outs etc, luckily didn't have my PC plugged into it though.

Do you have your PC plugged into a surge protector? some people seem to advise using against them but I've always found my systems to be very stable when plugged into one.

You really do need to try a different PSU though, it's a pain that you can't borrow one. If all else fails, I can send you my OCZ1000 watt for testing purposes, it's not being used much at present so I won't miss it for a few days. Postage to Cornwall might be a bit pricey, I'm in the Midlands! The offer is there though if you'll pay for postage.
 
when i had problems i bought another whole pc to test my things on only took 5 minutes to find the problem . Also did a friends pc same way 20 minutes to find problem . if i lived local you be quite happy to help you out
 
Its's definitely your monitor. I had exactly the same problem with my DGM 24" monitor when I upgraded to the GTX480s. Bought a new monitor and it was fine. I gave the old one to my parents and they haven't had any issues with it so it must be something to do with the combination of devices that doesn't work.
 
Most bets on PSU, a few on monitor.... the mystery continues...

Thanks for the kind help, and offer of OCZ1000W, I'll beg my brother to help me out with his PSU.... will try monitor first though, updates will follow.

Leaving work now WOOHOOO!
 
Not sure what to tell you until you can test the PSU.

You might check that all of your open 12V PSU leads are tucked away and insulated properly. I have had one of those touching to ground that caused intermittant reboots. Not the exact systems of yours but worth a shot. Pull every one, inspect, insulate.
 
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