@clayben
I hate to tell you this, but it would have helped if you did some homework before purchasing a 9th gen CPU upgrade.
That Omen 870 cant be upgraded to any thing other than another 6th gen CPU.
Here are your specs.....
https://support.hp.com/us-en/product/omen-by-hp-870-100-desktop-pc-series/12079703/model/13878933/do...
And beyond that, if you could go beyond the 6th gen, you would only have been able to go up to a 7th gen.
Socket LGA 1151 has two versions. The first will only accept 6th and 7th gen. The second will only accept 8th and 9th.
And even then, not on an HP unless there was a bios update that specifically allowed this.
I'm sorry, there is nothing you can do unless you wanted to build a complete new computer including a whole new motherboard.