Aspire V3-772G Windows 8.1 USB 3.0 driver problem - Acer Community

Hello all, I bought my V3-772G about 1 month ago. Yesterday everything was working fine and today i noticed than none of the 4 USB ports were ... ... [Problem solved!] Here is what you can try: 1) Make sure there that the file ntbtlog.txt located in C:

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