The title says it all i just decided to put in a old disk drive i have when i say old i got it last year but then i got another new one . The problem is when the old one is installed the one that was already installed does not show up in either device manager or my computer. The power works i.e. i can eject the tray etc. but nothing else i then with out touching the already installed drive unplug my old drive and the one that was already installed works.
Anybody got a clue what's going on, thanks.