I have recently purchased a Sapphire Radeon 290 and am having issues. It seems that whever my HDTV is connected via HDMI (Panasonic G20B) DWM.exe will randomly crash with the following error.
Faulting application name: Dwm.exe, version: 6.1.7600.16385, time stamp: 0x4a5bc541
Faulting module name: ntdll.dll, version: 6.1.7601.18247, time stamp: 0x521eaf24
Exception code: 0xc0000005
Fault offset: 0x0000000000031852
Faulting process id: 0x774
Faulting application start time: 0x01cf4a03b20d5b0e
Faulting application path: C:\Windows\system32\Dwm.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 6950c1eb-b5ff-11e3-b88f-ab9645f27df7
I have tried clean installing various driver versions to no avail. Stress testing the GPU I have no issues (at least when the HDTV is disconnected that is). I sometimes get the crashes whilst playing HD video to the HDTV and occasionally it will crash when minimizing/maximizing windows (again whilst connected on the HDMI).
I'm out of ideas now.
EDIT: I also get occasional small square blocks on the screen. But only seems to happen in certain apps with hardware acceleration like Firefox and Thunderbird I think? It's so random it's hard to know.
09:07 AM by