I have installed a second dvd drive in a compaq presario, the jumper settings are correct. On boot, the bios recognises the change and saves the setting, as windows starts it finds the new hardware correctly identifies the drive and model number and says its installed and ready for use. The drive is shown in device manager as working properly, it says a driver is not installed or not needed, trying to update the drive from the internet was unsuccessful. The NEC website says no drivers is needed as it uses Win XP own drivers. The drive does not appear in my computer so i cant access it. the drive does not show up in diskmgmt.msc. I have tried the following, compaqs preferred method of cable select with both drives on ide 2, the standard master + slave setting on IDE 2, the new drive on its own on Ide 2 as master+slave+cable select, on Ide 1 as slave/cable select. I have tried MS knowledge base and followed the instructions for a registry fix. In each case the result is the same. I have tried the drive in another machine and it works fine. Any suggestions would be greatly appreciated.