Re: Computer won't recognize CD&DVD drives
Well go to start, control panel, system, hardware, device manager and see if you have either a yellow exclamation mark or a red X if so something is wrong with the drives.
I would also take the side off and look to see if the cable to the drives came loose from the main board. Before you touch anything inside make sure and touch some metal first to ground yourself.
If they are plugged in OK then try to go back to device manager and uninstall on of the drives and restart, it will reinstall the drive.
If it works do it with the other drive also.
If none of this works you could try a firmware update from the vendor web site.