Please provide steps how to reproduce. Although I don't use safe mode, I don't see any reason why it should be caused by Aero Glass. Or is Win8 safe mode different from previous versions that it loads scheduled tasks? Charms Menu > Settings > Change PC Settings > Update and Recovery > Recovery > Restart Now (Under Advanced Startup) Then your computer will enter a blue screen with options in it. Select Troubleshoot > Advanced Options > Startup Settings > Restart Your computer should then reboot into another blue screen with a list of options. Press F6 to select option 6 (enable Safe Mode with Command Prompt, don't select other Safe Modes or you won't be able to turn your computer off). Your computer will reboot into a black screen with a CMD window. No other GUI elements should load. This is what happened to me, not sure if it is limited to just me... Also, to reboot from CMD once you've finished do shutdown /r