Windows XP does not recognize a USB drive after resuming from standby mode
Problem:
After resuming from standby, Windows XP does not recognize a USB drive. In Device Manager, you may see an exclamation point in a yellow circle, with a status of Code 42 (duplicate device).
Cause #1:
This problem may occur on a computer that has multiple USB ports and the USB connection to the drive was changed while the computer was in standby mode as in the example below:
A drive is disconnected with the system in standby mode. Later, the drive is reconnected to a different USB port. When the system resumes from standby mode, the error may appear.
Cause #2:
When Windows goes into standby it puts the drive to sleep. Then when the system wakes up, it doesn’t properly wake the drive up.
Resolution:
Unplug the USB drive from the new USB port and plug it into the original port. Windows will reset and recognize the device.
The other resolution is to disconnect the drive before the computer goes to sleep or disable the power saving modes on the computer.
