Hi..
Press Ctrl+Alt+Del and see if it brings up the Task Manager. If it does, great. Click on File > Run new task. Type explorer.exe and hit Enter. Once you've completed the steps, you should be able to use your device normally.This worked for me once when I faced this issue.
If This Methods Did't Work
Try Boot in to Safe Mode
You will need to boot into Safe Mode to undo that update, or perform a System Restore. Safe Mode would be best, because your video card device driver does not load in Safe Mode
Start your PC, just as Windows attempts to load (spinning dots), press and hold Power Button for 5 - 10 seconds to perform a Hard Shut Down
Do this twice
On the third start Windows will boot into the Recovery Environment and from there you can access System Repair, Safe Mode, Command Prompt . etc.
Go to Troubleshoot - Advanced Option - Startup Settings and click Restart
Upon restart, press 4 to enter Safe Mode
o to Troubleshoot - Advanced Option - System Restore
Check to see if you have a restore point you can go back to
Hope this information helps
Do let me know if you require any further help on this. Will be glad to help you.