From Microsoft's description for 0x116, it sounds like the display adapter stopped responding. Plenty of things could cause that. My best guess would be a hardware problem with the video card. However, unless you happen to have another one lying around, I'd first look for a software solution. I'd first try updating the graphic driver.
before theres no problem in my system it just came up when i update those driver i tried to download the old version even the latest driver buh still getting those bsod.... and i ended to reformat mah rig.... buh still gettin bsod...
Well, I'm not an expert with crossfire---never used it myself---but the fact that one video card works and two does not makes me think power supply or driver problem. Since you've already tried messing with the drivers...I'm thinking it's your power supply.
Now that I look at it 750W sounds a bit small for two 6970s with an overclocked 1090t.
I already restore mah bios soe stocke setting wth 2vga in stil getting bsod... Hmmmm psu maybe buh its been a while that im using 750 wth crossfire 6970 ... I guess the driver because when i run furmark it says ati driver stop working and go to bluescreen .... By the thnks for all the reply..