Use InSpectre to see if you're protected from Meltdown and Spectre
 

Esteemed programmer and computer security advocate Steve Gibson has been doing his thing as the Gibson Research Corporation since 1985. I've personally made great use of his SpinRite disk repair software. Gibson's latest app, InSpectre, is decidedly more topical. This tiny free app for Windows can analyze your machine and determine whether you're vulnerable to the Meltdown and Spectre security flaws.

https://techreport.com/news/33126/us...wn-and-spectre