[note] Lenovo T420s - recover MBR (remove Linux and grub2)

So I've tried Linux Mint for a couple of days and decide to remove it, mainly because it lacks hardware driver supports.

[note] Dual boot on Lenovo T420s

This is just a note on what I've tried and worked.

Operating System: Win 7 X64 Professional (pre-installed), wanted to install Linux Mint 16 Cinnamon x64