DHCP-allocator Event ID 3002

The DHCP allocator was unable to bind to the address 192.168.0.1
This error may indicate an error with TCP/IP networking.
The data is the error code.

After installing LevelOne Bluetooth USB Adapter I’ve got this problem. I can’t access the internet or my mail, cause the webaddresses aren’t resolved by DNS..
The errorcode in words: 0000:0000277a.

Who can help me out of this?