Q: Why the Windows 2000 system can't be waken up by USB Keyboard or Mouse after into stand by mode.
A:

You could follow up below method to solve this problem.

  1. Enter to the "Devices Manager" .
  2. Setting the "Allow this device to bring the computer out of standby." function as "Enable" from "Keyboards"->"Power Management" .
  3. Setting the "Allow this device to bring the computer out of standby." function as "Enable" from "Mice and other pointing devices"->"Power Management" .