The driver could not be loaded because a previous instance is still loaded.
"Windows cannot load the device driver for this hardware because a previous instance of the device driver is still in memory. (Code 38)"
A previous driver instance can still be loaded due to an incorrect reference count or a race between load and unload operations. Additionally, this message can appear if a driver is referenced by multiple INF AddService directives in one or more INF files.
Select Restart Computer, which will restart the computer.