I've been having trouble getting my new MSI 7850 to work. When installing new drivers (whether from AMD or MSI), the driver signature is not recognized, and I'm having to disable driver signatures to get it to load. When I disable signatures, the card loads and runs fine, except it won't run DirectX 10 or 11. Here's some data from the dxdiag:
DirectX Version: DirectX 11
Driver Name: aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
Driver File Version: 8.17.0010.1151 (English)
Driver Version: 126.96.36.199
DDI Version: 9Ex
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 9/27/2012 20:41:40, 1120768 bytes
WHQL Logo'd: Yes
Any ideas on how to troubleshoot? When I've uninstalled the old drivers (which I've done several times now), I've used a driver cleaner in safe mode to see if there was a relic from the old driver that was causing the problem.
This replaced an old 4850 if that helps.
Thanks for any advice.