@Justin53 , welcome to the Community.
Here is the Product Specifications page for the computer: https://support.hp.com/us-en/product/hp-slimline-411-a000-desktop-pc-series/9835690/model/9764542/do...
If you look at the section titled "Processor upgrade information, you will see that the processor is soldered to the motherboard. This means that it can't be upgraded.
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I am not an HP Employee!!
Intelligence is God given. Wisdom is the sum of our mistakes!!