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The other day I got a virus on my laptop (Windows XP), but Adaware found it and removed it. Not soon enough though, because it corrupted my rundll32.exe file. Now I can't run almost any application and I have tried to install a couple programs to fix my registry, but I can't even run the install file.

What other options do I have besides re-installing my OS?

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Doing a repair install might be an option.

Edit: Here is a nice how to with everything important to know.

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And how do you go about doing that? – wahle509 Mar 22 '10 at 13:56
    
@wahle509: Edited my answer. – Bobby Mar 22 '10 at 14:43

Found the answer to my problem:

Download exefix.reg, run it, and restart. It should repair the registry so you are able to run .exe files.

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