Delivery came expediently. My primary purpose for the purchase (being a retired IT person), was to have a PC with a lot of horse power and muscle to run the new Windows 11 Pro for my music applications. Before installing Windows 11 Pro, I activated the new PC with the pre-installed Windows 10 Pro license through the internet. This allowed the Microsoft Servers in the cloud to register the license. Note, starting with Windows 10, Microsoft keeps a record of the license tied to your physical PC in their database. If you need to reinstall Windows 10 or do a Windows 11 upgrade, it will automatically activate. I then proceeded to do a fresh install of Windows 11 Pro. Windows 11 Pro activated without an issue. I did have an issue with the Audio Sound card generating some transient noise through my speakers after the install. By default Microsoft loads all their drivers during a fresh install of the OS. Their drivers are not necessarily the same as the manufacturers drivers, and may cause additional problems with your PC.  I went back through the Device Manager, uninstalled the Microsoft Audio driver, and then reinstalled the Realtek audio driver from the MSI driver CD. That seemed to solve that issue. If you were to do a Windows 11 upgrade online from Windows 10 you might not have that problem. But without testing that, I don't know for sure. So keep your MSI disk (which comes with the PC). MSI is the motherboard manufacturer for this model. The PC runs fast and without any other issues; boots up quickly from the solid-state drive. Seems to be very reliable so far. If you want to turn this PC into a full-fledged Gaming PC; all you would need to do is procure and install a high-end Graphics Card.