I like to watch DVD's on my laptop and up until last night it worked fine but today it wont play DVD's or CD's and the drive is not even showing up under "my computer".

When I put a DVD or CD in the drive I get this message:
The specified drive cannot be located. Check the setting by going to setting> action settings> source, or otherwise check that the drive has been properly connected to the PC.

Ok so I did that but there is nothing in the source for me to click or check????


What should I do?