Source : support.dell
Download DELL Inspiron 14R 5421 Windows 8 64bit drivers
Application (5)
Audio (1)
BIOS (1)
Chipset (2)
Intel HM77 Express Chipset Family Driver 2/7/2013 9.3.0.1021, A01 Download
Mouse, Keyboard & Input Devices (1)
Network (5)
Dell Wireless 1704 802.11b/g/n, Bluetooth 4.0+HS Driver 6/27/2014 6.30.223.215, A07 Download
Intel BT Driver 2/7/2013 2.6.23.40059, A02 Download
Intel Wi-Fi Driver 2/7/2013 15.5.6.48, A02 Download
Realtek RTL8105E-VD Ethernet Controller Driver 2/7/2013 WIN7-7.061.0612.2012/WIN8-8.3.730.2012, A01 Download