Dell Inspiron 1546 Drivers for Windows XP/Vista/7

Compatibility: All drivers compatible with both 32-bit and 64-bit, unless separate download is provided.

Chipset
AMD M880G+SB820M
No installation required, but if you see SMBUS driver in device manager marked with yellow download the latest chipset driver from AMD.
Windows XP: Download
Windows Vista : 32-bit | 64-bit
Windows 7/8/8.1 : 32-bit | 64-bit

USB
AMD USB Chipset Driver
Windows Vista, Windows 7 : Download

Graphic/Video
ATI Mobility radeon HD 530v (refresh brand name of M92-LP)
Windows XP, Windows Vista, Windows 7 : Download
Windows Vista : Download
Windows 7 : Download

Graphic/Video
ATI Mobility radeon HD 4330
Windows XP : Download
Windows Vista : Download
Windows 7 : Download


Audio and Sound 
IDT High Definition Audio Driver (IDT 92HD81B1, A00)
Windows XP : Download
Windows Vista, Windows 7 : Download

Card Reader
Realtek RTS5159 Card Reader Driver
Windows XP : Download
Windows Vista, Windows 7 : Download

Touchpad
Alps Touchpad Drivers
Windows XP, Vista, 7 : Download
Windows Vista, Windows 7 : Download

LAN - Ethernet
Realtek RTL8103EL-GR
(Compatible for these cards : RTL8136, RTL8168 and RTL8169 Ethernet Adapter)
Windows XP : Download
Windows Vista : Download 
Windows 7 : Download

Wireless/WIFI:
There are 2 applicable/Variant for Wireless Drivers, choose one base on your specification. You can also test which work for you, installing wrong driver will not harm your system but remember to uninstall it later from the device manager.

Dell 1515 WLAN half-Mini card (Atheros AR5007)
Windows XP : Download
Windows Vista : Download
Windows 7 : Download

Dell 1397 WLAN half-Mini card (Broadcom 4312/4322)
Windows XP : Download
Windows Vista : Download
Windows 7 : Download