Hello BS10 and welcome to Bleeping Computer.
If your drive is experiencing issues with reading disks or burning them, it is either being caused by a dirty laser lens or a weak laser diode.
Sometimes compressed air can not clean the lens efficiently enough for the drive to work properly.
In cases like this,you are better off using cotton swab dipped in isopropyl alcohol 70%, lightly clean the lens in a circular motion and allow it to dry.
Try a disk and see if it is read by the drive.
If this fails to get it working again, it is apparent that your laser is no longer capable of focusing a strong enough beam at the tracks on the disk and the whole drive should be replaced.
The price of having the laser diode replaced in parts and labor will exceed the price of a new drive.
DVD/CD burner/read only drives for laptops can be replaced very easily, there is usually only one screw located on the laptop bottom holding the drive in place.
Once that screw is removed, the drive will slide out of the laptop.
If you prefer, you can use an external USB optical drive, they are basically a laptop DVD burner in a plastic case and a USB cable that plugs into the back of the drive, the drive is powere through the USB interface, so there is no need for a power cable.
Check this web page out, there are some drives on this page I use as replacements for laptop computers.