so i had my google nexus 5 rooted and had the bootloader unlocked and then i did 2 system updates starting at 4.4.2 updated to 4.4.3 then updated to 4.4.4 and then my device lost root access. what is the easiest way to unlock my bootloader and root my nexus 5 using windows 8 on android 4.4.4? all help will be greatly appreciated. thank you.