Windows 8 is by far one of the stable build of windows operating system but there are times when you will see an app not working in modern UI or some other program which cannot be uninstalled in normal mode in windows 8, In order to troubleshoot these scenarios you will need to boot windows 8 in safe mode, but booting windows 8 in safe mode is not that easy as it was in windows 7.
To enable the safemode in windows 8, you need to do it via the Advanced Startup options menu. To restart your computer into the Advanced startup options menu please go to the Windows 8 Start Screen and type Advanced. When the search results appear click on the Settings.
Now click on the option labeled Advanced startup options and you will be brought to the General PC Settings screen. Scroll down to the bottom until you see an option labeled Advanced startup.
Now click on the restart button and then Windows 8 will restart your computer and go directly into the Advanced Startup options menu. Now click on the Troubleshoot button and then the Advanced options button. You will now be at the Advanced options screen if you press Shift + F8 where you should click on the Startup settings option. If you’re on a multi-boot system, during the booting select Windows 8 OS and then hold Shift button and press F8 button to get the options.
Repair Your Computer: Shows a list of system recovery tools you can use to repair startup problems, run diagnostics, or restore your system.
Safe Mode: Starts Windows with only the core drivers and services. Use when you can not boot after installing a new device or driver.
Safe Mode with Networking: Starts Windows with core drivers, plus with networking support.
Safe Mode with Command Prompt: Starts Windows with core drivers and launch the command prompt.
Enable Boot Logging: Creates a file, ntbtlog.txt, that lists all the drivers that load during startup including the last file to load before a failure.
Enable low-resolution video: Set or reset the display resolution. Start Windows in low-resolution mode.
Debugging Mode: Enable Windows Kernel Debugger.
Disable automatic restart on system failure: Prevents Windows from automatically restarting after a crash.
Disable Driver Signature Enforcement: Allows drivers containing improper signatures to be loaded..
Disable Early Launch Anti-Malware Driver: Allows drivers to initialize without being measure by the Anti-malware driver.
Start Windows Normally: Starts Windows with its regular settings.
Now you can select safe mode so that you can now boot into safe mode in windows 8, you can also enable safemode boot option through msconfig in windows, by pressing the windows + R key and then typing the msconfig command and then select the safe mode under boot tab and safe the preferences.