If for some reason, your computer’s CMOS battery is not working, you’d have wrong time and date in your desktop system tray.
To fix this, simply install this Time-Syn utility;
Better option is to replace your old and faulty CMOS battery with a new one. But sometimes it is either too expensive option, or you may not have enough time to do so.
When Windows 7 starts, it takes time for the Internet to connect. Hence the time-sync sometimes does not work automatically. To manually sync, follow this;