Many people are upset at the new look and feel of the start menu. Well fear not, the follow tweak will re-enable the classic start menu that we all have come to love.
To get back the old start menu, open regedit, goto
change value of RPEnabled from “1” to “0”
close regedit, you get your old start menu……the catch is, no more metro UI because you just disabled it. To get back the Metro UI, change the value back to “1”