QUOTE(boxburn @ Feb 21 2012, 11:26 PM)

I think it might possibly be the correct drive but here's the problem, when you updated the console to the latest dashboard, it re-flashed the firmware of the old DVD drive to support the newer games, if the other drive you have is the correctone, it hasn't recieved the new firmware to let it play the newer games. So simply, if the "play DVD" drive was the correct one, you updated the wrong one to allow it to play newer games and because its the wrong drive, the console wont use it. Now you are stuck with the correct drive with the wrong firmware. Did that mke any sense?
Thanks. I see what your saying but its not that it worked before the update and doesn't now.
Right, the play DVD drive is also the one I updated and now will play old games ie skate but will not play wwe12. The other drive has not been updated at all as it will not stay closed so I never bothered with it.
Using lateshaggy's very helpful images I have now determined the boards. Thanks for this

So. Currently. I have
Xbox 1
Xenon board
20GB HDD (no idea if this is meant to be with this one or the other Xbox)
No hdmi
Samsung ts-h943a (will play old games, won't play new games. Recieved update to dashboard whilst in this Xbox).
Had rrod before I replaced thermal paste.
Xbox 2
Falcon board
Hdmi port
BenQ drive (won't stay closed)
When I first recieved these both from the same person who had clearly opened them both as clips were broken and screws missing inside.
The BenQ drive was attatched to the xenon MB. It had the rrod and after that was repaired the drive wouldn't stay closed.
The Samsung drive was attatched to the falcon MB and would play DVDs but not games.
I then put the Samsung drive into the repaired xenon MB and it plays old games. I updated dashboard and it still plays old games.
Could the HDD be an issue?
Am I better off trying to replace the laser in the BenQ drive and see if I can get Xbox 2 working instead.
Again , I'd like to thank all of you who have replied so far. It's all very much appreciated.
Jule
This post has been edited by shrtwrec20: Feb 22 2012, 09:53 PM