I just recently had a problem with my laptop. Here's what happen, after using my laptop, i shutdown it normally and on the next day when i turned in On i've just found out that the Wifi is longer available. I checked the Device Manager->Network Adapters and unfortunately there's no wifi driver and bluetooth driver, only the Realek driver(for lan cable). I've search a wifi driver on dell site and there's a Dell Wireless 1704 and Dell Wireless 1705.
For Dell Wireless 1705, i installed it but the installation is failed and on Dell Wireless 1704 when i installed it it ask for activating the Bluetooth through wireless switch which is FN+F2? i've tried it and it doesn't work.
Also, my Inspiron 15 3537 is a windown 8.1 (64x bit)