DriveStation Not Recognized After Standby

Users will need to disable power management on USB ports for this issue.

1. Click [Start] > [Run].
   
2. Type devmgmt.msc in the Open box, and then click [OK].
   
3. Expand the Universal Serial Bus controllers node, and then follow these steps for each USB Root Hub that is listed:
   
   a. Right-click the USB Root Hub, and then click [Properties].
   b. Click the [Power Management] tab.
   c. Click to clear the Allow the computer to turn off this device to save power check box, and then click [OK].
   
   

Here is a link to a Microsoft Knowledge Base Article addressing this issue:
http://support.microsoft.com/kb/871233