I think this explains it best:
http://windowsbulletin.com/windows-driv ... pu-memory/(Do not run the tool from that site!!)
"Windows Driver Foundation is the former name of Windows Driver Framework. This is a set of Microsoft libraries and tools that help reduce the complexity of writing Windows drivers. It puts the drivers in user mode. This service is necessary for the overall stability of the system."
If the problem persists, you can go ahead with the steps outlined in the article above -- other than the "repair" tool offered.
Bottom line, it is possible that a driver decided to misbehave. Sometimes a reboot takes care of it.
-steve
_________________
stephen boots Microsoft MVP 2004 - 2020
"Life's always an adventure with computers!"