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Possible Duplicate:
How do you associate the .exe file extension with a program in Windows?

I recently booted my computer and all of the executable files have turned into 7zip icons. A hoard of error messages popped up upon startup stating that 7zip could not open the files.

2 questions:

  1. How do I restore this problem so I can open my programs and my computer will boot normally?
  2. What caused this and how do I prevent this from coming back?
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marked as duplicate by studiohack Nov 26 '11 at 19:53

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

This is not a virus the same thing happened to me after I tried to open a windows media player INK file with 7-zip. So maybe your tried to open something that your shouldn't have or something went wrong with computer. – user100802 Oct 9 '11 at 23:21
Try this answer: – kinokijuf Nov 26 '11 at 19:48

Certainly, to me this sounds like a virus. I would immediately run a complete scan using EVERY anti virus I have AFTER disconnecting from the internet.

I use Malwarebytes and Microsoft Security Essentials.

Good luck.

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Agreed, this is definitely not something that happens randomly, it is almost certainly malicious. – MaQleod Oct 20 '10 at 2:19

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