Thanks both RiggsFolly and Otomatic!! You really gave me big hope about my problem.
So, no need to reinstall Wamp, just use my copy of the entire directory. I tried to run wampmanager.exe but it gave me the error message of Msvcr110.dll is missing, so as I read in internet, prior the steps you suggest me, I have to reinstall all the VC files and then continue with your steps, right?
Again,
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