Help locate correct drivers for alienware 14 mid July 2013

I had to replace the hard drive in my Alienware 14...I did a fresh install of windows 8.1.After the install I

Search dell's website for the drivers that originally came on the machine..I did find most of the drivers except for the  ethernet and wifi.I have installed all the drivers on the Dell website with no fix.I have search all alienware and dell websites for the drivers no luck.Will someone  please help me to locate the original drivers to get my machine back up and running.Its alienware 14 2013. mid june