I ran WHOCRASHED and get the following: 10 crash dumps have been found and analyzed. A third party driver has been identified to be causing system crashes on your computer. It is strongly suggested that you check for updates for these drivers on their company websites. Click on the links below to search with Google for updates for these drivers:
atikmdag.sys (ATI Radeon Kernel Mode Driver, Advanced Micro Devices, Inc.)
I thought I had latest AMD drivers - 14.4 - but device manager says 14.1 so will try latest.
The reason I want to know the best way for updating drivers, ie using device manager, is that with the graphics card best way is via safe mode, remove old drivers, reboot and then install new drivers. Is that right?