Also, activation issues: if the key is tied to hardware, using it on new hardware might not work and require reactivating, but since Microsoft is no longer supporting it, activation might be tricky. Maybe mention that.

Activation and licensing: Since activation is still required, but keys obtained legally. Maybe mention the dangers of using pirated keys, and the importance of purchasing from a legitimate source. OEM vs. retail keys, which ones are better for reinstallation.

In troubleshooting, maybe common hardware compatibility issues, like needing to install drivers after installation.

Alright, with that outline in mind, I can start drafting each section, making sure to cover all these points while staying within legal and ethical guidelines.

Need to include a disclaimer about the risks of using an unsupported OS and the importance of security measures.