hi guys, my lenovo y410p recently having " Event ID 13 from source nvlddmkm cannot be found" when playing new games (i tried tomb raider, sniper elite 3, shadow of mordor, watch dogs which receive same errors). i already ask to nvidia tech support they ask me to reinstall driver but it aint work. my friend has y400 which didnt have optimus activated he playing games all fine never received this error. And if i unlock the bios can i disable the optimus? so i wondering if you guys having same problem like me.. please help i really appreciate your supports:)