This is a more obscure issue that can cause some problems. Your clock may be behind Windows 7 for a number of reasons. One possibility is that your computer is set to the time zone of a different country than your current location. This can happen if you have recently traveled, or if you have moved and have not yet changed your time zone settings.
To fix your clock is behind windows 7, you need to adjust your computer's time zone settings. You can do this by following these steps:
1. Open the Control Panel.
2. Click Clock, Language, and Region.
3. Click Date and Time.
4. Under Set Time Zone, click Change Time Zone.
5. Select your time zone from the list.
6. Click OK.