When I was installing the Microsoft .NET framework 4 in my machine and it get installed after some days I had Code 39 errors, and it was saying like the device is not working as I seen in the device manager. I am running Windows 7 Home Premium 64bit, and have ACER 5739G-6959 laptop, I have confirmed that I have no virus in my machine, and together with that I have checked almost all the possibilities for solving the same, but didn’t got any solution. What could be the problem, as I haven't faced any such ever. Need some suggestion.
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