On Thursday I use leap motion, and it works very bad.....it doesn’t see my hand. What temperature should be leap motion? After I use it, temperature was about 42 degrees. On Friday I turn computer on, and nothing happened, led is black, no device in windows and no sound plug in. Try use different port, Usb wires, reboot, reinstall. Nothing help me. Today I plug in leap motion, and it works, but so terrible.....recalibrate doesn’t help. I have to hold the hands directly over the device slightly upwards or to the side, the device immediately loses hand.