A brand new internal hard drive has to be partitioned and formatted before Windows can assign a drive letter to it and write data to it. You can do that in Disk Management where the drive should be shown as "Unallocated Space".
Control Panel > Admin Tools > Computer Management > Disk Management
Find the drive in the bottom-right panel (unallocated space).
Right click and choose "New Simple Volume".
When that's been created (only takes a few seconds), right-click on it and choose "Format" (takes considerably longer than volume creation).