More checks when loading the driver

[Eric Pouech]

> the error no longer exists. I guess some registry entry was corrupt and a
> successfull  run corrected it later.
this also could happen with stack corruption

> However I see a lot of check after  DRIVER_FindFromHDrvr() in other parts of
> the code... 
they are not checks, but rather discoveries of the actual capabilities 
of the driver

A+

-- 
Eric Pouech