I'm not sure if it will make a difference but I thought I'd better give details of the faults. I sent my laptop off fro repair as My "B" key was not working and my inbuilt wireless had stopped working. it was almost as if someone had removed the card one minute it was working fine and the next it wasn't the connection wasn't showing up in network connections and the wireless card couldn't be found in device manager.
When I got my laptop back the note said that the wireless card had been replaced and that it was tested and working. when i turned the laptop on the wireless worked for less than 5 minutes then the same problem reoccurred.
There was no mention of the B key being fixed and indeed it still wont work.