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#11
There are a couple of basic servicing tasks that need to be done first:
1. Use fresh stocks of writable DVDs, they do deteriorate over the years.
2. Clean the drive optics, easy on a Laptop DVD drive as this comes out on the tray.
I use a torch/flashlight and magnifying glass to see if optics are clean. The mechanism is very delicate so be very careful with cleaning.
The cleaning on Laptop type drives needs to be about yearly.
These are the basics, consumers can understand the reasons why, and are deduced from decades of Optical Disc use.
When these have been met then move on to other things.