when i tried to upgrade my ram from 8gb to 2x8gb (sc hynix)/(hyperx) my pc started to beep continuously and im kind of sure that i installed it correctly, anyways my pc did not boot up and when i tried to put back the old one now my pc turns on for 1 sec then turns of automatically by itself and im not even pressing the on and off button. I have the Lenovo ideacentre lenovo ideacentre y720 cube 15ish .