USB not recognised after re-boot

Just added a simple external USB drive to a server to act as a secondary

backup device.

Working fine until a re-boot following M/S updates.

Now it is not recognised. I doubt if it were the actual updates. I

suspect that the drive is just not being seen as it is already plugged

in. However, it does see the USB tape drive OK.

Anyone know how to get the box to scan the USB ports and pick up the

drive?

I typically RDC into this machine as its 25 miles away.

Don C