I'm running 10.7.4 on a Mac Mini with an Apple Trackpad accessory. It's been running fine for some time. Earlier today I ran the Onyx 2.4.3 utility as I usually do once a month. On reboot the trackpad is no longer recognized. Even with fresh batteries and clicking it's on/off button back and forth a few times. Another reboot and the same result.
Went to the Network Pane and chose the Bluetooth option. Shows Bluetooth Pan not connected. Devices: No PAN devices found. Clicked on Setup Bluetooth device and was told No Bluetooth Hardware found.