Hi, I replaced the card. Even though I was not able to disconnect the battery, because some of the screws there are not screwable anymore after replacing the battery a couple of years ago…
But it worked. Wifi is working fine. But my main problem was that the Bluetooth did not work. The Computer did not even recognize that there is bluetooth hardware anymore, it says Bluetooth: not available.
Unfortunately this problems stays with the new card.
Might there be a falty wiring somewhere else? does anybody has another suggestion to try?