Buy Windows 7 Professional From Microsoft ✓

: Tied to the first motherboard it is activated on; generally cheaper and meant for system builders.

: Many modern hardware components (CPUs, motherboards) released after 2017 do not have official drivers for Windows 7. Buy WIndows 7 Professional license key - Microsoft Q&A buy windows 7 professional from microsoft

Retail boxed and OEM versions are frequently available on eBay . : Tied to the first motherboard it is

Sites like ProductSoft and SoftState often list digital keys (ESD) or physical boxes. : usually more expensive.

: Can be transferred to another computer; usually more expensive.