File type changed automatically in to unknown format

[Atleast]

Dear all,

In my system all files file type changed in to unknown file type. if I try to open by changing in to correct file format its shows as junk file. All files are important pls help me in this. Am attaching screen shot for your reference. hoping for better response.. pls help me.

 

[ICIT2LOL]

Hello and welcome Atleast mate looks like quite a pickle you are in. Now two scans we would normally ask you to do are these if you haven't run them already
http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html
http://www.sevenforums.com/tutorials/433-disk-check.html < if necessary include the /f and /r in the command line as per Option2
If these do nothing then post back please but just make sure you run them as admin and in safe mode if you want to as safe mode only loads the essential Windows files to power up. To do that shut down then wait a few seconds - power up while tapping F8.

 

[Brink]

Hello Atleast, and welcome to Seven Forums.

In addition, you might also see if doing a system restore at boot using a restore point dated before this happened may be able to undo and fix this for you.