I had one machine where you had to be in the pre-installed OS for the wifi hot key to work (stupid design, in my opinion). Looks like the radio is off though, judging by the "Tx-Power=off" statement.
You could try some command line tests:
ifconfig wlan1 down
ifconfig wlan0 up
iwlist wlan0 scanning
If the internal card is causing problems, you may just want to remove it. Should be in a mini-pci slot under a cover, with two wires snapped on to it. After removal, put some electrical tape on those wires to prevent electron re-routing.