Hi guys.I have a problem with my laptop lenovo z50. So today i had some problems with sound so i updated it. As you all know you have to reset pc to accpet changes. I loged in ,icons appered and suddelnly screen started to flash and it turned black. I couldnt do anything so i force shutdown it.I started it and suddelnly there was a strange beep sound arround 17-21 times long about 5 seconds.(short fast beeps, like beep.beep.beep) and next error appearedefault Boot Device Missing or Boot Failed so i stucked there clicking enter nothing happened ,restarted pc same error, So i searched through web and tried a fix through going into bios and changing from "UEFI" to "Legacy Support" under boot. After i did that there was no more error but still there was sound. Lenovo screen appeared but without circle sppinning. I waited for 10 minutes trying restarting many times still same. And now i cant get even into bios. Tried putting battery out wating 30 minutes putting it back and nothing.Pls help me im so sad.