Hi guys, this is my first post, I decided to change my large desktop case for a new opera media case, i put everything back as it should and most has worked except for the dvd drive, I am running windows 7 home premium, my motherboard is a ASRock 4 core dual sata 2, running 4 pentium 2.4 chips, when I go to my computer It shows a cd drive instead of a dvd drive, after some time it may show the dvd drive, and after a while shows just a cd drive again, if i insert a dvd, the dvd light is on contstantly, after about 20 mins or so, it will play the dvd, but very jumpy, anyone know how to fix this, I have updated all the drivers but to no avail, also my second HDD shows up on the start up screen but not in my computer, this also is intermitent, there one minute gone the next, and I have noticed if I touch any of the cables at the back the computer reboots ?, the only thing I can think of is when I installed the spacers when fitting the mobo, I have put them in the wrong place, I foolishly forgot to check the position of the screws before I removed the mobo, in the new case all the holes match up with all the holes in the mobo, so how do i tell which are the correct ones, any help would be really great, thanks in advance guys.