My NI USB device will occasionally lose connection to the computer, and I have to disconnect and then reconnect it before it will work. Why does this happen, and how can I get Windows to re-detect the device, without having to physically disconnect the device?
This behavior occurs when the device loses power, but the computer does not. For example, often when a computer goes into standby or power-save mode it will often shut down power to the USB ports. Also, this can happen when a computer returns from having been hibernated. In either case, the device is not re-detected by the computer and thus you will not be able to communicate with it.Follow the instructions below to re-detect the device within Windows when this happens:
Note: If your user interface devices such as a mouse or keyboard, or any other USB devices such as a USB Network Adapter are on the same root hub as the USB device you are trying to re-detect, then you will lose connectivity to your mouse or keyboard while the restart is performed.
Collaborate with other users in our discussion forums
A valid service agreement may be required, and support options vary by country.