Wrong system clock on Windows 10 might be caused by a problem with Internet Time server. Fortunately, you can easily change the Internet Time server by following one of these steps:
- Open Control Panel. You can do that by pressing Windows Key + S, typing Control Panel and choosing Control Panel from the list of results.
- Navigate to Internet Time tab and click Change settings button.
- Navigate to Internet Time tab and click Change settings button.
- In the Server section select time.nist.gov instead of time.windows.com and click Update now.
- Click OK to save changes.
Read more on http://windowsre`port.com/fix-windows-10-clock/
