Dell inspiron 15R 5537 Wireless adapter problems

So I bought my 15R recently and installed Win 7 64 bit and downloaded/installed all drivers perfectly fine except 1 thing, the wireless drivers wont install and keeps telling me failed to install.
I'm suppose to have 2 drivers:
1) Dell Wireless 1705 Wi-Fi + Bluetooth Driver (says installation failed)
2)Dell Wireless 1704 Wi-Fi + Bluetooth Driver ( stuck at enable wireless switch although i keep enabling it and nothing happens)
The thing is my laptop automatically installed a diffrent driver that made the wireless tap showing and working but its very unstable and rarely connects to any router and to make sure the problem is not from my router I connected from diffrent devices (phone, pc, other laptop) and all working fine I'm also writing this post right now via a wireless adapter that I bought (working fine)
so please anyone who got an idea how to install these 2 drivers please help me and here is a screen shot of my network drivers 
http://s21.postimg.org/40nsown47/Capture.png