I updated to window 8.1 on March 13th, and I restarted my laptop on that day. Nothing's wrong at that time.

And it wasn't shut down since then. But this morning when I open my laptop and log in, and found everything is gone!!!

My desktop background is black, my folders and documents that used to show on the desktop are all disappeared and things that are pinned to the toolbar are gone too!!! And also all the applications that have installed are gone....

Anyone know what's going on ????? What should I do??? Is there any possibility to recover it ???

Hello Vanessa5598,

Do you mean that you have black screen and cant find the desktop application icons?

Please check if the shortcut exists in the folder C:\Users\(username) \Desktop.

Please check if you can run the program in the folder where you installed it.
Please try to create a new account and check if you can normally use it.
If the issue doesnt exist in the new account, please refer to the following article.
http://windows.microsoft.com/en-hk/windows/fix-corrupted-user-profile#1TC=windows-7
This issue is related to Windows 7, and the Windows 8.1 is similar.

Best regards,
Fangzhou CHEN