Hi all, I really hope to find one or two experts in this area As the title says, it's not been easy gaming with this rig: Asus nvidia 8800GT G92GT rev A2 Abit IP35 Pro 1.0 Zalman 600W modular Corsair 4x1GB CM2X1024-6400 XMS2 5-5-5-18 Problem: All kind of games are crushing down followed by BSOD. Even 3DMark06 crushes sometimes (IDirect3D9::GetDeviceCaps failed: Not available (D3DERR_NOTAVAILABLE)). I have many error msg writen down, and I was investigating my self all over the internet, found a lot of nice hints and possible solutions but problem still exists - and I think I can't fix this. Here you can see screenshots just before BSOD/crushing, and there is few error msgs under some of the screenshots: http://amer.pictures.fi/kuvat/nvidia_errors/ Crashing happens after 5 to 30 min of playing Played with different Windows versions (32bit / 64bit of XP, Vista and 7 ), ALL (mobo, nvidia) drivers versions tested - no go. The only noticable improvement was with Windows 7 x64 but still crashing and BSOD sometimes. - RAM is tested few times in many different ways, works for sure. - Another used 8800GT tested and the same problem occures --> used card so can't be 100% sure (card owner says it works on his machine thou) - ATI 4850 didn't even POST (beep, beep, beep, beeeeeeeep) but that was also used card so who knows but at this point it was hard to suspect the graphic card anymore so next was mobo to be replaced. - Tried with another mobo, Asus P5QL Pro, brand new one - actually was much faster mobo than IP35 Pro in everyday Windows tasks, but in games the same fcking errors and crashes occured - didn't help so I returned that mobo back :shadedshu - I ve tried a couple of different 8800GT BIOSes but no difference in here. - Tried also mobo's BIOSes 16, 17 and 18 but no go Well, I m getting new Corsair TX 620W PSU and ATI 4870 Vapor-X these days but what do you suggest me to test first, new PSU with present 8800GT or new GPU with present Zalman? --> I should definitely return one of these new things since I m not rich at all right now, and I m planning to build new system next year anyway. Any thoughts, help is much appreciated!