I got the Viper Mini on 6/23, came from China, decided to wipe it with isopropyl alcohol 70% concentration, nothing bad happening. Then it's day 2 for my Viper Mini, at this point everything started acting weird. When I plug in the Viper Mini it works fine but after a while it gets undetected by my PC, when I plug it back in again the same things happen, and eventually it gets completely undetected by my PC. I tried all the "uninstall drive stuff" but it doesn't work. I restarted it, checked the usb port, cable, wire, mouse, everything is fine. My brother was convinced that it was the alcohol that caused all this mess, but I've been doing it for weeks now on my Razer Deathadder Essential. Then I noticed something interesting, when I plugged the mouse, nothing working sensor, click, led, as I was expecting. Then I looked at the sensor and saw a red light, I was convinced that it was nothing, but then I saw it on my Deathadder, so this could possibly be a software error. Hope this gets noticed.