Let's try the following:
Press CTRL ALT DEL to run Task Manager.
Now, on the File menu, select New Task (Run...).
Type in: explorer.exe and press OK.
That will restart explorer and may display your Taskbar.
The infection mentioned will hide all the files on your computer from being seen.
To make your files visible again, please download the following program to your Desktop:
Double-click on the Unhide.exe icon.
This program will remove the +H, or hidden, attribute from all the files on your hard drives.
If there are any files that were purposely hidden by you, you will need to hide them again after this tool is run.
Retired - Doin' Dis, Dat, and slapping malware.
Malware Eliminator/Member of UNITE and the
Alliance of Security Analysis Professionals