When I plug my DWA-140 into my Windows 7 PC, it says the drivers are being installed, but then the adapter is always shown as "disabled". Trying to enable it has no effect. The light on the DWA does not come on.
However, if I plug the DWA into a different Windows 7 PC, it works fine!
Any ideas? I've tried removing the driver and reinstalling, both from the DLink software, and letting Windows Update find the driver.