No task is currently using this Provider
That means the provider is running, there is just no application running that this provider is designed for.
eg: the outlook/exchange provider will show "waiting for a subsystem to start" and will automaticly be activated as soon as you are gonna use outlook (not outlook express) or exchange.
How do I get the Scanners back to "default"
Just read the manual to see what each provider is for and enable/disable them to your needs.
Do the same ofcourse for the settings that each provider offers you.
Remember: each system and user is different.