Booting to Safe Mode is often the most efficient way to fix Windows issues. Add Safe boot to the Windows boot option to quickly boot into Safe Mode.
If you have dual boot Linux and Windows, you will notice that GRUB 2 will replace your current bootloader as the default bootloader. This article shows you how to configure the boot menu of Windows 8 and return it as the default bootloader. This is useful if you prefer something a little more familiar.