Serial ATA hdds do not require jumper settings when installing. Try replacing the cable or running a diagnostic on the drives. western digital is my preferred manufacturer. Go to their website (www.westerndigital.com
) and check out the support tab. They should direct you to their diagnostic tools.
Now, if you are having trouble with the drives showing up at POST, then you may have a bad cable, sata controller(motherboard) or bad drive. If they DO show at POST and you have trouble seeing them in windows then you may need to initialize the drive.
Right click "my computer"-> manage-> drive managment. This should pop up a window automagically for the initialization wizard. if not, there should be a list of drives there and one should indicate that the drive is either uninitialized, not partitioned, or may be initialized as a dynamic disk. If it's labled as a dynamic disk, right click the grey square in the bottom right hand portion of the window and click "convert to Basic Disk" this will allow you to re-partition it properly.