Need help with Lite-On

Unit: Slimtype Combo LSC-24082K, I believe this is Lite-On?

Anyway, my unit wont recognize/read any new discs. Example: tried to load Microsoft Office and the unit did nothing. I tried other discs that came with hardware and still nothing.

It will read a disc that i burned using Nero.

So, I used another computer and burned a copy of MS Office. Popped it into the Slimtype and it worked fine. It’s not reading the original MS Office disc, but it’s reading the copy.

This scenario applies to all of my discs that came with hardware.

What is going on? Why does the unit only work with discs that are copies, and wont work with originals? Making copies of every disc is a hassle.

Thanks to anyone that responds