You might try using net start
instead of sc start
. If you continue to receive this message then it is possible that you haven't compiled your driver correctly and this is the reason it's failing to load.
There is a full example of a simple DriverEntry
based "Hello World" driver here:
http://www.catch22.net/tuts/introduction-device-drivers
I'd also recommend reading Windows NT Device Driver Development by Peter Viscarola.