Cant find dvd player

I completely broke down my computer to a fix a problem.It turned out to be the video card not being seated properly. I really screwed up by not putting the cards back into their original slots.I have everything back to normal(I think)except for one problem. Both of my DVD's are not being seen in the MY COMPUTER window. I have power to the players and they will spin a disc but thats all. I've tried plugging into the primary as well as secondary IDE but no change. I tried downloading the software and drivers for the DVD's but they cant see them either. Somebody please help!