Let's just set aside the question of why they installed it in the first place, and that anyone who loved Vista is possibly sick. They exist, walk amongst us, and are even our friends and relatives.
In "Windows Vista Was End-of-Life in 2017: Why Are You Still Using It?" I hit on the following:
• Security Risks
• Compliance Risks
• Lack Of Compatibility With Other Software
• No Support
The bottom line: It is simple! Upgrade the computer to Windows 10. And when Windows 10 it is approaching end of life, don't hold off, upgrade it.
Come on over and join me, leave a comment or recommendation here and/or on joebrochin.com "Windows Vista Was End-of-Life in 2017: Why Are You Still Using It?"
I am currently working on trying to find a way to feed my website content here and other locations in full and on a schedule.