If not, right-click the "unknown" SSD and select initialize.
Use the Windows key + X keyboard shortcut to open the Power User menu.
Here's how to get the new SSD working in Windows 10: Luckily, Microsoft has made this a fairly straightforward process and you'll be installing games in no time at all. In order to use the new drive, you first need to initialize it and have Windows create a partition.
The Omen 15 laptops come packing a mechanical 7200RPM hard-disk drive. This isn't required but is highly recommended. You should use an Anti-Static Wrist Strap when touching the internal components. This has not only the right size Philips screwdriver bit but also a pry tool that works flawlessly. If you have none at hand, I would recommend picking up the Kaisi Repair Kit Magnetic Screwdriver Set for $12.99. Slow and steady wins the race to a more awesome laptop. It's better to go slow with the HP Omen 15 as it's pretty easy to thread screws, damage the chassis by attempting to force it open, and accidentally hitting the main board with a screwdriver. This guide will run you through how to change out the three components, which should take around 15 minutes per component, or around 20 minutes if you're doing all three in a single session.