Hi thanks for the info,
Your crashes relate to Video drivers and DirectX:
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* Bugcheck Analysis *
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Use !analyze -v to get detailed debugging information.
BugCheck 1000007E, {ffffffffc0000005, fffff88004820251, fffff88005a958f8, fffff88005a95150}
Probably caused by : dxgmms1.sys
STOP 0x0000007E: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
Usual causes: Insufficient disk space, Device driver, Video card, BIOS, Breakpoint with no debugger attached, Hardware incompatibility, Faulty system service, Memory, 3rd party remote control,
Try reinstalling DirectX:
:ar: http://www.microsoft.com/en-gb/download/details.aspx?id=35
Take memtest. Run for 8 passes and test each stick in a know good slot for an additional 6 passes.
I know you have just changed your RAM but even new components can be faulty, just to eliminate.
:ar: http://www.sevenforums.com/tutorials/105647-ram-test-memtest86.html
atikmdag.sys
AtihdW76 AtihdW76.sys Tue Jan 15 20:41:25 2013
atikmdag atikmdag.sys Sat Feb 16 03:47:02 2013
atikmpag atikmpag.sys Sat Feb 16 02:29:25 2013
Update your ATI Video drivers to the latest (if available) (remove the Catalyst Control Center and only install the Display Driver)
:ar: http://support.amd.com/us/Pages/AMDSupportHub.aspx
If the ones you have installed are the latest version, try rolling back your driver to the previous version.
Run SFC to check the integrity of all Windows 7 system files:
Click on the Start > Type in search
cmd
Right click cmd at top and Run as Administrator
Type
SFC /scannow at the prompt (note the space between SFC and /scannow)
:ar:
http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html
Also please Run chkdsk /f/r in an elevated command prompt.
Again Click on the Start > Type in search
cmd
Right click cmd at top and Run as Administrator
At the command prompt please type:
chkdsk /f/r
(Note: there is a space between chkdsk and /f/r)
:ar: http://www.sevenforums.com/tutorials/433-disk-check.html
Post back any results / observations.
cheers
Dave