Verbatim Disc's?

[Headly]

I have a Magic 3.5 installed on a v7. I am sure the install job was done very well. No wires touching or bad connections. I am using Memorex dvd+r discs. my system plays all originals ps2 discs and dvds fine. Ihav not tried burnt dvd movies yet but when I try to load a copied ps2 game it just goes to the screen to select browser or system configuration. I open the browser and it say disc read error. I have tried recording at the slowest speed possible. do you thnk it is the media or my chip?