Right click the time in the bottom right corner of your screen.Select adjust date/time and then internet timer.Make sure automatically synchronise with an internet timer is ticked. Select Time Zone, and make sure it is on GMT and automatically adjust for daylight saving is ticked.
Click STARTUP and have a look at the applications that start with Windows. It might be one of them playing with the time. To check it just disable them and restart. If the clock goes forward then it's not these apps. If the time is correct then it is probably one of the apps.
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