@signus21 yes the BIOS does have the correct time.

Well, I had this problem ever since I got this PC, that is a few days ago. Being the PC brand new, I exclude the fact that the CMOS battery ran...

I have Windows 10 Home version 1607 build 14393.321, installed on my Lenovo Z51-70 80K6.
My displayed time is always 2h behind.
The time is set to sync automatically.
The time zone is set to UTC+1...