Not sure if this is the right place for this question. I inherited an HP 7840 with Win ME and a bunch of viruses and spyware - it was a real mess. The problem was that there was none of the original software that came with the computer and HP was no help, so I wrote zeros to the hard drive and started over with Win98SE. After a lot of searching for drivers I finally got everything up and running except that I can't read a cd in the cd drive. Windows shows the drive (E) but when I click on it I get an error message saying the drive is not ready. I also have a CD-RW drive (D) that works fine. When I put a disk in drive E I can hear it spin, but cannot access the disk. The cd drive is a Lite-on Model LTN485S with firmware revision JKU2. Their website (Lite-on) was not much help either, as I couldn't even find jumper setting info.