Source : support.dell
Download DELL Inspiron 14 Legacy Inspiron Models (5439) Notebook Driver Windows 7 64bit

	Vendor	File	Version	Size
Download (25)	Application	Intel(R) WiDi Driver	4.1.19.0,A00	10/16/2013
Download (33)	Application	Dell Quickset Application	11.2.05,A00	10/11/2013
Download (28)	Application	Intel Rapid Start Technology Application	3.0.0.1048,A00	10/11/2013
Download (41)	Audio	Realtek High-Definition Audio Driver	6.0.1.7024,A00	10/11/2013
Download (26)	BIOS	Dell Inspiron 5439 System BIOS	A02	11/19/2013
Download (32)	Chipset	Intel USB 3.0 eXtensible Host Controller Driver	2.5.0.19,A00	10/16/2013
Download (25)	Chipset	Intel Chipset Device Software Driver	9.4.0.1017,A00	10/11/2013
Download (37)	Chipset	Intel Management Engine Interface Driver	9.5.2.1489,A00	10/11/2013
Download (23)	Chipset	Realtek Card Reader Driver	6.2.9200.21239,A00	10/11/2013
Download (28)	Mouse, Keyboard & Input Devices	ELAN Touchpad Driver	11.3.10.2,A00	10/11/2013
Download (30)	Network	Intel(R) Smart Connect Technology Application	4.2.40.2357,A01	11/13/2013
Download (25)	Network	Intel(R) Wireless-N 7260 Driver	16.1.5.2,A01	11/13/2013
Download (23)	Network	Realtek Ethernet Controller Driver	7.74.815.2013,A00	10/16/2013
Download (23)	Network	Intel(R) 7260 Wireless Bluetooth(R) v4.0 + HS Adapter Driver	3.1.1306.352,A00	10/11/2013
Download (23)	Security	Validity Fingerprint Sensor Driver	2.2.0.0,A01	10/11/2013
Download (23)	Serial ATA	Intel Rapid Storage Technology Driver	12.8.2.1000,A03	10/11/2013
Download (24)	Video	Intel HD Graphics Driver	9.18.10.3234,A00	10/11/2013
Download (34)	Video	nVIDIA GeForce GT740M Graphics Driver	9.18.13.1170,A00	10/11/2013

DELL Inspiron 14 Legacy Inspiron Models (5439) Driver Windows 7 64bit