Windows not updating time
Windows includes a built-in troubleshooter that may be able to help fix a stuck update.It’s the easiest method to try, so go ahead and run it first.While World Time can help you look up accurate times around the world, our visitors have expressed much interest in our help to keep your local computer clock accurate, too.Atomic Clock Synchronization is the best way to make this happen.Most of the time, the troubleshooter can successfully remove a stuck update from the queue. Even if the troubleshooter says it couldn’t identify the problem, it’s possible that the actions of starting and stopping the service and clearing out the cache did the trick.
This causes problems in a dual boot system if both systems view the hardware clock differently.
Giving the tool administrative privileges helps ensure that it can delete files in the download cache.
The troubleshooter works through its process and then lets you know whether it could identify and fix the problem.
If I correct the time in Ubuntu then when I boot up in Windows XP the time will be off by 4 hours. I did not have this problem before reinstalling Ubuntu.
Operating systems store and retrieve the time in the hardware clock located on your motherboard so that it can keep track of the time even when the system does not have power.