Microsoft officially for Windows 7 on January 14, 2020.
Use Rufus to create a bootable USB drive (8GB or larger). windows-7-sp1-x86-x64-aio-33in1-oem-ptb-aug-2017-gen2
You will not receive new security updates from Microsoft, making the system more vulnerable to malware and exploits. Microsoft officially for Windows 7 on January 14, 2020