Hi,
It means one or more of your device drivers do not support it (standby mode)
properly. Update drivers from the hardware manufacturer (not Windows Update)
to see if it resolves itself. Keep in mind that it may not, as desktop
systems are often fickle when it comes to this function.
--
Best of Luck,
Rick Rogers, aka "Nutcase" - Microsoft MVP
Associate Expert - WindowsXP Expert Zone
Windows help -
www.rickrogers.org