Sounds like you have logged into a temporary profile. Try restarting your computer a few times. Press Control + Alt + Delete
Click Sign out
At the sign in screen, click the power button, then click Restart. Do this a few times then try signing again. If the desktop still does not show up, then you will need to create a new local user account.
Press Control + Shift + Esc
Click File > Run new task
Type: control userpasswords2
Click Add
Enter a user name
Password, confirm it, create a hint
Click Next
Click Finish
Click OK
Sign into the new account.
Open File Explorer on the Taskbar > This PC
Open the drive where Windows is installed
Open Users
Look if your old account old is there with your files
If they are, you can copy them over to the new account.
Or
Press Control + Alt + Delete
Click Task Manager
Click File > Run new task
Type: explorer.exe
Click OK
Another option is to to kill the File Explorer process completely.
Press Control + Alt + Delete
Click Task Manager
Click File > Run new task
Type: CMD
Hold down the the shift key
Click OK
Type:
taskkill /f /im explorer.exe
Hit Enter
Exit Command Prompt
Click File > Run new task
Type: explorer.exe
Click OK
If that does not work...
There seems to be some early adopter issues at this time with Windows 10 1803, if you can, I recommend you downgrade to your previous version until the Spring Creators Update matures with future cumulative updates.
Press Control + Alt + Delete
Click Sign out
At the Sign In screen, hold down the shift key on your keyboard while clicking the Power button on the screen
Continue to hold down the shift key while clicking Restart
Continue to hold down the shift key until the Advanced Recovery Options menu appears
Click Troubleshoot
Click Advanced options
Click Go back to the previous version of Windows
Windows Update might attempt to upgrade to Windows 10 1803 again. See instructions how to block it:
https://www.groovypost.com/howto/block-windows-...
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.