Sometimes the Windows does not boot to the GUI after it finishes loading.
Instead the system might:
Boot to a black screen with a blinking cursor on the top left corner of the screen right after the Windows logo.
Even load to the wallpaper without a taskbar or any icons on the screen.
Such an issue can be categorized as failure to start GUI. This is caused when the explorer file is missing or corrupted. Most of the times, a simple restart of the system can resolve the issue.
There are many possible reasons for failure of the Windows explorer file. The file can fail due to a power surge or sometimes even due to Windows updates when the update goes wrong during its installation or due to viruses.
The next logical troubleshooting step that should be followed after a system restart is to try the Windows advanced startup options.
