3. Safe Mode
Tap F8 during boot-up to access the boot menu. Choose Safe Mode to launch a special stripped-down version of Windows that keeps drivers and background utilities to a minimum and looks like it's straight out of 1995. Safe Mode can be used to uninstall programs or devices, or run fixes, if you can't get into Windows normally.
http://snip.ly/g6txh heres how to get to safe mode if it's not enabled.