Hello waldemar, I've just surprised that system _do agree_ to load your driver with such funcs as RtlQueryRegistryValues or ZwSetValueKey and alike. My problem is that system DO NOT EVER START ENTRY POINT of my driver when I ever link such a funcs! As I can see in debugger it opens binary of my driver, reads some piece - and refuse to load as it see that Rtl... or Zw... funcs calls present!!! May be there is no system DLL with such funcs? -- Best regards, ns mailto:neslon@xxxxxxxxx ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/