I've been a good customer of Scan's for a number of years. I ordered a 580 GTX as a little birthday present to myself in March 2011. For the first few months everything was fine - the card performed a treat and lived up to expectations of delivering really powerful performance.
Around three months into ownership, while playing a game, Windows bluescreened. I reset the machine, and the entire screen was pixelated. Even as it POSTed, then loaded into Windows, the screen was covered in flickering pixels everywhere. Reset, the same thing. The computer crashed as it tried load the Windows desktop, then would restart all over again. I turned the machine off, and left it 10 minutes. The exact same thing happened. The computer (which had been 100% stable for months) would not load into Windows and would loop endlessly while the screen was pixelated.
I swapped the card out with an old 5770 that I knew to be stable. The machine booted fine first time and loaded into Windows. I then played some games to see if it was OK. Everything seemed fine. I then placed the 580 GTX back in, and everything seemed normal. Quickly loaded a few games, ran a MSI Kombustor stress test, everything was fine. Weeks went by with no problems with it.
Then it happened again. I would be playing a game, then the screen would flicker black, then come back on with a "driver crashed" message, and the screen pixelated. Restarting only resulted in a pixelated, flickering screen even in the BIOS. Taking the card out for 10/20 minutes and disconnecting it seemed to fix it temporarily. Again, it would work for a period before the same problems. I updated drivers, did a clean reinstall of Windows 7, no matter what I did, the same thing would always happen. I've been a loyal Scan customer and spent many thousands and this is my first RMA - I hope this won't be my last purchase after all the goodwill that has been built up.
Just to disregard all the obvious stuff - the card is in a Raven Rev. 02 case for great aircooling, is powered by a Corsair HX620 and different driver/OS combinations have been tried with no avail. I RMA'ed the card to Scan (RMA 256877) and received my email today saying the card has been tested with no fault found.