BSOD are normally either a software- or Memory related.
This one sounds like a software issue, probably caused by a Windows Update.
Please try this:
Make sure Windows is fully updated.
Check if mainboard bios is updated with latest version (sounds abit weird but often helps a lot)
Boot up system in safe mode (pressing F8 during boot). Uninstall all graphics related software including driver catalyst software and also Benchmark software (like Afterburner) etc.
If you cannot un-install certain software in safe mode, please use a software program like DisplayDriverUnstaller “DDU” http://www.wagnardmobile.com/DDU/
After this is done boot up normally and Windows will ask to install driver for the “new hardware”, just close that.
Go to: http://support.amd.com/en-us/download/desktop?os=Windows%207%20-%2064
to dowload and install the latest driver.
For WIN7 i think the 13.9 is also a very good and stable Catalyst driver version.