Source : support.dell
Download DELL Inspiron 17R Legacy Inspiron Models (5720) Notebook Driver Windows 8.1 64bit

Category	Vendor	Description	Version	Date
Audio	Audio	IDT High-Definition Audio driver	1.0.6426.0	10/17/2013	Download
BIOS	BIOS	Inspiron 5720 System BIOS	A19	05/09/2014	Download
Chipset	Driver	Intel Chipset Driver	9.4.0.1026	10/17/2013	Download
Chipset	Driver	Intel Management Engine Interface Driver	9.5.14.1724	10/17/2013	Download
Chipset	Driver	Realtek CardReader driver	6.2.9200. 39052	10/17/2013	Download
Application	Application	Dell Update Application	1.6.1007.0	07/23/2015	Download
Application	Application	Dell Digital Delivery Application	2.9	07/30/2014	Download
Application	Application	Dell Quickset Application	11.1.45	10/17/2013	Download
Application	Application	Intel Rapid Start Technology Application	3.0.0.1056	10/17/2013	Download
Network	Utility	Dell Wireless 1704 802.11b/g/n (2.4GHz), Bluetooth 4.0+HS Driver	6.30.223.245	01/05/2015	Download
Network	Utility	Intel Wireless 6250/6150 WiMAX Application	7.5.1007.26	12/19/2013	Download
Network	Utility	Dell Wireless 1703/1901 Wi-Fi + BT Driver	10.0.0.263	10/17/2013	Download
Network	Utility	Intel 2230/6235 Wi-Fi + BT v4.0 + HS Adapter Driver	3.1.1307.360	10/17/2013	Download
Mouse, Keyboard & Input Devices	Driver	ALPS Touchpad Driver	8.1200.101. 218	10/17/2013	Download
Serial ATA	Driver	Intel Rapid Storage Technology Driver	12.8.2.1000	10/17/2013	Download
Video	Driver	nVIDIA Geforce GT 650M/640M/630M Graphics Driver	9.18.13.3165	03/17/2014	Download
Video	Driver	Intel HD Graphics 4000/2500 Driver	10.18.10.3277	10/17/2013	Download

DELL Inspiron 17R Legacy Inspiron Models (5720) Driver Windows 8.1 64bit