So yesterday i was going through my old things and found my old pc. I wanted a new hdd so i opened up the pc and installed my old 1TB HDD in my actuall pc. Now i have 1 ssd 120gb and 2 1TB HDDS. I didnt have any problems but today i got this message saying reboot and select proper boot device. And i just restarted the pc and it went normal in windows. Is it something i should be scared off? Or do i just restart the pc again if it happensa again?