I have come to the conclusion that my DVD/CD burner can no longer read commercially pressed CDs. Burned CDs seem to work, but not pressed CDs. DVDs of both varieties also seem to work. I did send the computer in for repairs a month ago. However, after finally receiving it three weeks later they told me they could find nothing wrong with the Drive. Brilliant. I just tested 7 Pressed CDs, 6 of which are brand new. And guess what? 100% failure rate.
Now I have to find another month to go without my computer, or spend $100 on a temporary solution.
Bah.