Three articles (of many) about how to run Windows 8.1 in Safe Mode or turn on/off permanently ability to select that upon system boot.
- How to start Windows 8 in Safe Mode:
http://www.bleepingcomputer.com/tutorials/start-windows-8-in-safe-mode/ - How to enable the F8 key to start Safe Mode in Windows 8:
http://www.bleepingcomputer.com/tutorials/enable-the-f8-key-in-windows-8/ - How to Disable New Metro Boot Loader and Bring Back Windows Vista and 7 Style Boot Loader in Windows 8?
http://www.askvg.com/how-to-disable-new-metro-boot-loader-and-bring-back-windows-vista-and-7-style-boot-loader-in-windows-8/