Ok, delete exe_fix_w7.reg, I have uploaded another registry file for you to try. Download http://cid-302fc4a61ffc4465.skydrive.live.com/self.aspx/.Public/W7exefix.zip and extract W7exefix.reg. Copy it to your Desktop and doubleclick on it or rightclick on it to merge with your registry, reboot afterwards. You will get a message saying the file was successfully added to your registry. Reboot now.
If it wont merge, go to Start and type:
cmd.exe
in the Start Programs and Files box. You will see cmd appear at the top of the Menu. Rightclick on it and choose Run as Administrator. Next copy and paste the below command after the prompt (where you see the cursor blinking and use your rightclick mouse functions to do this).
%userprofile%/Desktop/run.vbs
The script should run now and you should see a box where you can type regedit. Your Registry Editor should open. Go to File > Import and browse until you find W7exefix.reg and click on Open. You should get a message to confirm the file merged with your registry. Close your Registry Editor and reboot.
Let me know how you get on.
MVP (Windows Desktop Experience)