I built a computer a weeks ago and I a few days ago I saw that there was a recommended action on Windows Defender. It said: "One or more device drivers may not be working properly." I opened the troubleshooter and it said there was a problem with a cpu driver so restarted, and it seemed like the problem was fixed. The next day, there was still a recommended action, so I repeated what I did the previous day. Now, the recommended action is still there. My cpu is Intel i5 7400.