I've just installed the latest AMD drivers using their auto-detect installer and now my computer's lost all accelerated graphics completely. So nothing can use OpenGL at all, including Blender. I'm going to have to get back to you after sorting it out..... :-( Feel free to close the issue or put it as very low priority - it smells like driver/card issues to me too now.
Aug 26 2015
Aug 24 2015
I've just downloaded and tried the Blender-2.75.0-git.4f61de6-AMD64 build - same thing happens.
Aug 21 2015
Sorry, I have the latest versions that are available. I've been looking into it though, and there's something more important (probably) - the laptop has dual switchable graphics (I never even new this!). It uses the on-board graphics, which is Intel HD graphics (hardware ID PCI\VEN_8086&DEV_0116&SUBSYS_1659103C&REV_09), for menial tasks and somehow switches to the AMD card for more demanding applications (hardware ID of the AMD card is PCI\VEN_1002&DEV_6760&SUBSYS_1659103C&REV_00). Blender version 2.74 is reporting the card in use as the Intel one. I'm attaching the system-info from that just in case it's any use.
Aug 13 2015
--factory-startup : same issues happen
I can't get into the Settings tab in UserPreferences, so not able to change anything there.
GPU driver settings had no effect.
Help -> System Info just crashes Blender.
Command line : only error was "Error: EXCEPTION_ACCESS_VIOLATION".
Software OGL : same issue
Aug 11 2015
This is still happening in version 2.75.4 (from buildbot blender-2.75-c150645-win64.zip). Another place it crashes is when selecting Cycles as the renderer.