having had problems with ATI's drivers I ran my cards on the 11.11 drivers. (I tried a few others but these where the most stable on my system)
Yesterday The autoupdate asked me if I wanted to upgrade my drivers. I clicked NO. After a reboot My screen flashed once and then I got a no signal/cable conected. Now the screen is ruined I've tried it on my GF's comp but it just flashes on an off and then show a no signal message. Iv'e tried conecting my GF screen to my computer and it works for a few minutes but I only get image for a few seconds at a time. I managed to uninstall the graphics drivers and could work reasonably well for a while. I managed to DL the 11.11 drivers but Now the cards wont accept them or any other (11.3, 11.12, 11.10) drivers. I lose image imediatly on boot up.

I've tried installing other drivers, I took out one of the cards as I know Crossfire can cause problems, I cant even get in the bios so my hands are tied.
Any suggestions on what to try next?

I'm running
Win7 HomePremium sp1 64 on a
Formula III Rampage
I7 960 CPU
16Gb Corsair Vengence 1600
Dual Radeon 6870 Crossfire
Corsair TX 850W gpu.

I am assuming you mean the Catalyst suite asked if you wanted to update the drivers...not Microsoft update? If so, I always disable that in the options. Try downloading the newest drivers from AMD. Save them then express uninstall your old drivers from "remove a program" in the computer control panel. After reboot...run driver sweeper  http://phyxion.net/Driver-Sweeper/Driver-Sweeper/  select AMD graphics drivers and delete all it finds. Reboot and install the new drivers.

I would also visit this page http://downloadcenter.intel.com/Default.aspx

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