Clock constantly reverting, but not to a fixed time...

[A6TH]

My clock is constantly reverting itself, like the time is flowing slower. I have to synchronize it every 10 mins. It's not a CMOS battery. It started happening two days ago. I checked if it's a malware, but I think it's not.

 

[A6TH]

I don't have any 3rd party clock app, I restarted Windows Time service, but reverting happens again.

 

[A6TH]

Yep, both set properly.

 

[A6TH]

I found the solution to the problem: What I did is clear RTC RAM in CMOS (Since I have a Sabertooth Z87, I followed the steps on the page 24 of chapter 1 in user manual). After booting up, I had to set up the clock in BIOS and when the PC booted into Windows, I changed my time zone to some other, then back to mine and now the clock is working as it should. The thread that led me to this solution: http://stackoverflow.com/questions/18995923/windows-8-8-1-system-clock-changing-randomly-while-powered-on-and-in-use