Hi,
I replaced it with a Fire GL v7200 (all I had lying around) just to test this, and the same issue came up, red screen. Both cards work well under Windows 7 x64 using guiminer.
I am using a Dell Precision 490 workstation which has a non-standard shape size dell motherboard with 1x Zeon processor (plus room for another) - could this be not ideal for BAMT?
I have done a PC memory test (memtest86) and video card stress test CE and both show good.
Any suggestions please?
Can you take a pic of the screen and post it? I think I know what red screen you are talking about, and I think it leads back to stratum servers and you needing to update your cgminer and use that.