support.dell.com/.../document

Drivers:  support.dell.com, enter service tag, Downloads.

Still can not find them.

Start with the chipset driver

www.dell.com/.../inspiron-15-intel-n5050

Download the following to a USB drive on another computer and install in the order liested:

BIOS A05 http://ftp.dell.com/FOLDER00799802M/1/N5050A05.EXE (Update if you want, if you aren't already at A05.

Intel HM57 Express Chipset Family, HM67 Express Chipset Family http://ftp.dell.com/chipset/R302527.exe 

Intel Management Engine Interface http://ftp.dell.com/chipset/R302543.exe

Intel TurboBoost Technology Monitor http://ftp.dell.com/chipset/R311629.exe

Realtek RTS5138 Card Reader http://ftp.dell.com/chipset/R302427.exe 

IDT 92HD87B1 http://ftp.dell.com/FOLDER95194M/1/R308434.exe

Realtek Ethernet http://ftp.dell.com/FOLDER97296M/1/R307625.exe

Dell Wireless 1502 http://ftp.dell.com/FOLDER00163154M/2/R312125.exe (Variant A)

Dell Wireless 1501, 1503, 1701 http://ftp.dell.com/network/R302627.exe (Variant B)

Dell Wireless 1701 http://ftp.dell.com/network/R302514.exe (Variant B and Variant C)

Dell Wireless 1702 http://ftp.dell.com/FOLDER00163144M/2/R312102.exe (Variant D)

Dell Wireless 1704 http://ftp.dell.com/FOLDER00477659M/2/DW1703_W7_A00_Setup-W1GV9_ZPE.exe

Alps Touchpad http://ftp.dell.com/input/R302461.exe

Dell Quickset http://ftp.dell.com/app/R302489.exe

There are several variants in the wireless card so pick the correct one. Also ensure the driver extracts and installs and doesn't just extract. See here for more details:

http://en.community.dell.com/support-forums/software-os/f/3524/t/19480753.aspx

driver send me

yes

network controller