CD Player

Hey, i have a cd/dvd player that i didnt use since 2015s. And rn i want to buy album cds. But im not sure if the player is still working. I tried old cds (movies) but it couldnt opened the movies. But still I’m not sure if the player is working or not because the movies were so old. Is there any specific way that I can understand the machine is working or not? Thanks