Wrong time displayed in Windows 10

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 Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna.
Daylight savings time is set to adjust automatically.
The internet time server is set to be: pool.ntp.org. I also had the same issue also when it was syncing to time.microsoft.com, so this is not a server problem.
If I sync the time manually it will display the correct time, though it switches back to the wrong time when I restart it and I have to sync it manually every time.
I already tried using services.msc and setting Windows Time to automatic, but it didn't solve this issue.
I have dual boot Windows 10 - Ubuntu 16.04. In Ubuntu time is correct. So this is not a hardware problem, it's a Windows 10 bug.
Prior to installing Ubuntu I had the same time issue, so it's not the case that the Ubuntu installation messed up.
Example: it's 20:40 right now, but it displays 18:38, unless I sync it manually every time.
Date is correct.
How do I solve this? Have I missed any information?

@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 out. Moreover, I had this issue prior to dual booting and, therefore, also exclude Ubuntu as a cause. Please correct me if my assumptions are wrong.

By the way I found a solution to my issue in another forum where they directed me to this wiki. I put the links so other users in my situation can hopefully solve this ussue. I fixed the registry as suggested adding a QWORD (for 64-bit system) with value 1. More info on the procedure in the link to the wiki. Now time is fine both in Windows and Ubuntu.
I am now marking this thread as solved.