Windows 10 - slow clock

[NoobishSVK]

Hello, I have a problem with my Windows 10 installation on my PC. I have a single boot system, but my clock looks like it's going slow.

Let's say it's 10AM, time has been manually synced successfully.
When the realtime is 10:30, my PC is 3 minutes late and shows that it's 10:27 - I have to sync the time every few minutes manually. (If I won't sync it, the time will be even more late)

CMOS battery can't be the problem as I already tried out 3 batteries.


I also tried to scan it from viruses, but it found nothing. What should I do?

I can seem to sync my time only with time.windows.com - time.nist.gov doesn't really work.
Also my timezone is correct.

 

[JamesSneed]

Is the Windows time service starting up as automatic? https://www.organicweb.com.au/20209/general-technology/windows10-time/

 

[Colif]

Have you got latest bios? What are specs of pc?

can try setting power scheme to High Performance, set screen/PC to never turn off, and in advanced power options, set hdd to never turn off

this is an old problem: https://social.technet.microsoft.com/Forums/windows/en-US/e56e5469-9ffd-49c9-859a-d0e4291bdb58/slow-clock-or-lagged-time-on-win7-x64?forum=w7itprohardware

 

[johnbl]

Disconnect from the internet and see if you still have a time problem.
Hackers spoof the default intenet providers to create hacking opportunities.