Likely you are trying to install a Broadcom driver when your system has an Atheros wireless card. Provide the hardware IDs so I can confirm: [URL]
when i try to install dell WLAN and Bluetooth driver, it appear " activate bluetooth using wireless switch". My laptop"Dell inspiron 3542 run ms windows 8.1". Please help me ! 
how to activate Bluetooth using wireless switch on dell inspiron 3542