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HP Recommended
HP EliteDesk 800 G3 Base Model Small Form Factor PC
Microsoft Windows 10 (64-bit)

There had been some questions about this video card and the 800 G3 in the past. It may help someone with my experience. The K620 works great in my system as mentioned, but it was a real endeavor as I had HP Sure Start enabled. After disabling that and making some other BIOS Security changes associated with Sure Start the card works quite well. But it is not a journey for the feint hearted. It was a bit of a trial and error finding out which settings were blocking the card installation. As stated, I hope this helps someone else installing the K620.

My Info:
"Currently owning an Elitedesk 600 G3 running smooth as silk with Windows 11. But servicing Desktop and laptops running Windows"
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the <a href="https://www8.hp.com/us/en/terms-of-use.html" class="udrlinesmall">Terms of Use</a> and <a href="/t5/custom/page/page-id/hp.rulespage" class="udrlinesmall"> Rules of Participation</a>.