Hi Biren Install the following drivers, I will answer here opposed to the comments on my guides. Regarding driver installation, install the following in order. BIOS A12: [URL] Review the notes here when updating the BIOS: [URL] Intel Chipset Device Software: [URL] Intel Management Engine Interface: [URL] Intel Rapid Sorage Technology: [URL] Intel TurboBoost: [URL] Card Reader: [URL] Intel HD Graphics: [URL] NVidia driver: [URL] Input: [URL] Realtek Ethernet: [URL] Airplane Mode Switch Driver: [URL] Dell Wireless 1705 Driver: [URL]  Intel Wireless Display Connection Manager: [URL] Realtek Audio: [URL]  Dell Quickset: [URL] Once all system drivers are installed you may wish to install Dell Backup and Recovery which should make a new factory partition from your clean install. [URL] 
can anyone help me please? I have ins[piron 14 3421 with windows 8 SL 64 bitI have freshly installed windows 8 (that my inspiron 14 3421 came with) from dell provided OS dvd. I will be installing the update KB2871389 and then upgrading to win 8.1 (as suggested by Philip yip), and installing 2 updates KB2919442 and then KB2919355. after that, I have been asked to install all drivers freshly - for win8.1 so, which drivers do I need to install for my 14 3421 for windows 8.1 64 bit? thank you for your support. biren  
which drivers - inspiron3421 with win8.1