Some dmp files blame on dxgmms1.sys as the cause. It's related to your VGA driver so I suggest you to reinstall that driver.
While reinstall, better to remove current driver with driversweeper then install the fresh copy of your ATI drivers. Guru3D - Driver Sweeper
For troubleshooting purpose, disable CCC (Catalyst Control Center) and reinstall directX runtime --> Download details: DirectX End-User Runtimes (June 2010)
Uninstall Alcohol/Daemon software and remove its driver (sptd.sys) with this tools --> DuplexSecure - Downloads
Because sptd.sys have some issue with Windows 7 and for alternative software you may use MagicISO.
Update these drivers: