After installing Windows 7 on a new hard drive I then installed two new optical drives which have SATA connections. Now these show up in device manager and BIOS but neither will work.
Go to control panel -> administrative tools -> computer management -> disk management and check if they are listed over there... If that''s' the case check if they are online and have a drive letter assigned to them. Sometimes drives can get offline or there could be conflicting drive letter etc. In Disk management you can check those things out.