DVDRW player not working sony optiarc DVD RW AD-7170A

when a dvd is inserted into the player there is no response and there is no signs of it when looking in the computer

More details are needed.

Is it a burned disc or a pressed disc?

Is it a rewritable disc? Do you use a software like InCD, Alcohol 120%, Daemon Tools or similar?

Can you test the same disc in another drive?