Hard Drive not being detected

[C11AvAlAnchE99]

I have a new computer build and for storage I have a 120gb Samsung 840 Evo SSD and a 2tb Seagate Barracuda HDD. The other day I looked at my storage on my computer and the only storage it was detecting was my SSD and my optical drive. I tried switching the SATA port it was plugged into on my motherboard but it still isn't being detected. When I installed windows it was detecting it but now it isn't, please help.

[brob]

You likely have to initialize the drive. Click your Start button, type "Disk Manage" in Search programs and files and pick "Create and format hard disk partitions". You should see the hdd with no partitions on it. You'll have to create a partition on the drive, see the help.

[DudeWazap]

I have a new computer build and for storage I have a 120gb Samsung 840 Evo SSD and a 2tb Seagate Barracuda HDD. The other day I looked at my storage on my computer and the only storage it was detecting was my SSD and my optical drive. I tried switching the SATA port it was plugged into on my motherboard but it still isn't being detected. When I installed windows it was detecting it but now it isn't, please help.

Have you activated your drive yet using disk management on windows? After you do that you can assign it a letter and create a partition then it should be detected.