Help asap

my Dell latitutude cpx doesn’t recognize when i plug in my dvd rom/cd-rw slim combo drive. It saids there isn’t one plugged in. where can I go or what do i do to fix this?thanks

My LG external drive recommends that it should be plugged in before the PC is turned on, although it generally hotswaps OK. If that doesn’t work, try using a different USB port (assuming it’s USB).