Build-in webcam not detected

Hello,

After reading some of the other topics related to this one I didn't found my solution.
So here is my problem.
About a month or so ago I've send out my laptop for repairs on the screen. The screen got replaced and everything seemed fine. But, when I reinstalled my OS to clean up my HDD fully my build-in webcam didn't detect at all. I tried installing 3 different drivers but it still doesn't work. In my Device Manager there are no undetected or any devices with troubles (the yellow triangle). Does anybody know how to fix it?

Just some extra information.
Model: Acer Aspire 5742ZG
OS: Windows 7 Ultimate.

Greetings, Timmyethy123
 
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