Solved Can't run .exe files

[Roman1337]

I know some people already asked this question before, but nothing of what has been suggested works for me.
A couple of months ago I got Windows 7. Everything worked just fine until yesterday. I ran a full scan using "Avast!" anti-virus. It found a couple of malwares which I deleted. I rebooted my PC, and to my surprise I couldn't open any .exe file, I only managed to open Explorer by going to where it's installed and clicking "iexplore" Nothing besides explorer and some Windows tools work.
Following some suggestions, I downloaded extension fixes ( which came as .reg files) both in safe and normal mode,and tried to change the .exe and exefile values using the registry editor. I tried downloading a few programs which were meant to automatically fix the problem, but I couldn't run them either. I tried updating aswell but the problem is still here.
If anyone has a solution, please let me know.
Thanks.

EDIT: Thank you guys so much! It all works now!
The SFC /scannow did the trick.

 

[Anak]

Hi Roman1337, welcome to 7F

Seems like the new Avast definitions are causing the problems.

Take a look at this post:
http://www.sevenforums.com/system-s...r-programs-dont-want-open-up.html#post1592780

There are three links that lead back to the Avast Forums.

 

[z3r010]

It's been reported that an SFC /scannow fixes the avast botchup - http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html