I am working on a friends HP 8580C. It has a HP CD-Writer Plus and a Pioneer DVD player. After installing some software, (they are not sure which software was installed) the cdrom's disappeared from the device manager. They show up in safe mode but not in the bios. I went ahead and removed them in safemode but the Plug and Pray did not find them. I did have 1 boot in 30 where they came back and worked fine. Has anyone seen this?