DVD-Ram not reading CD's (plz helP me!)

i have the matshita dvd-ram sw-9585
for some reason, it won’t read certain music CD’s, or data discs.
the data discs are CD-R
i have the newest drivers
i even checked if it was proprely plugged in (which it was)
can someone help me?

Clean the drive and test it maybe in/on another computer.