Troubleshooting: PC not showing new hard drive / 2nd hard drive in new build

1) If you just installed a second hard drive and it isn't showing up in windows it likely because you have not yet initialized and formated the drive. Read Guide: Initializing and formatting a second hard drive for more information

2) If you cannot initialize and format the drive double check your connections, ensure that the hard drive is both getting power and is connected to the motherboard.

3) Check BIOS. If the drive doesn't show up under BIOS either, it may be a sign that the hard drive is faulty, or that there is some form of compatibility issue between the drive and your motherboard.