Installing USB Drivers (Windows)

[url=http://zadig.akeo.ie/]Download Zadig-2.3.exe[/url] and choose[br]Options -> List All Devices[br]USBasp[br]libusbK (v3.0.7.0)[br][br]then click "Reinstall Driver"
– Michael Borcherds

Information: Installing USB Drivers (Windows)