This is for windows 8 Pro x64 users with old ATI HD cards.
If you get the error when trying to run blender
"load library failed error 126"
I started getting this error after updating the ATI drivers and running a beta build of blender.
Follow these instructions.
1. Download http://www.ramraidersoftware.com/blender/fixoglati.reg
2. Open regedit as administrator (in the run box type regedit and hold shift+ctrl keys and hit enter)
3. Import the reg file you just downloaded.
No need to restart just run blender!