LG GSA 4160B won't read CDRs



I’ve had an GSA 4160B for almost six months now, at first, it seemed to work fine, but lately, it can’t seem to burn properly. IT woulda show read errors when I do a verification using Nero, but when I open the CD, all the files appear, but I can’t actually run anything. I tried that SAME CD that wasn’t working on my computer on my brothers computer and it worked fine. I even reformatted everything and reinstalled XP SP2 and it didn’t make a difference. I’ve used Pine brand and Memorex brand CDs. Anyone have any suggestions??