I cannot view or enlarge the image you posted. What is the text in the image asking you to do or warning you about?
Since I cannot think of any reason for Windows to ask you to "unhide" files I think this may be malware.
Use Super Antispyware to find and remove the malware.
After downloading, installing and UPDATING SAS in regular mode, reboot to safe mode to run the scan. Instructions for using SAS are in the link below.http://www.bleepingcomputer.com/forums/ind...t&p=1040160