To start with please try pressing " Windows logo and letter D" together, that will show you the destop screen.
If this does not resolve, please try performing a system restore on your PC that may resolve this issue.
System Restore enables you to change a collection of Microsoft Windows system files to a configuration that existed at a particular point in time. No personal data files, such as email, documents, or pictures, are lost or changed.
Use the following steps to restore your computer when Windows does not open normally.
Turn off the computer and wait at least 5 seconds with the computer in a full off state.
Turn on the computer and repeatedly press the F11 key, about once every second, until you see the Windows loading screen.
If a language selection screen opens, select the language you want to use to continue.
On the Choose your keyboard layout screen, select the keyboard layout that matches your keyboard type.
Figure : Choose your keyboard layout
On the Choose an option screen, click Troubleshoot .
Figure : Choose an option
On the Troubleshoot screen, click Advanced Options .
Figure : Troubleshoot
On the Advanced options screen, click System Restore .
Figure : Advanced options
Click Windows 8, click Windows 8.1, or click Windows 10 as the target operating system.
Figure : System Restore
The System Restore window opens.
Click Next .
Figure : System Restore window
Click the restore point that you want to use, and then click Next .
The Confirm Restore Point window opens.
Click Finish to restore your computer to a previous point.
Figure : Confirm your restore point
Do not interrupt System Restore when it starts. Doing so can corrupt your hard drive and create more problems. Click Yes in the warning that appears.
Figure : Do not interrupt warning
System Restore returns the computer configuration to a previous point in time and restarts.