Hi,
Were there any recent changes made in the computer prior to the issue?
Follow the methods.
Method 1: Run network troubleshooters and check if that helps.
‘Using the Network troubleshooter in Windows 7’http://windows.microsoft.com/en-US/windows7/Using-the-Network-troubleshooter-in-Windows-7
Method 2: Check if the Windows Time Service is started.
- Click on start and then type Services.msc and press enter.
- Locate the Windows Time Service.
- Check if the Service is started or not. If not, then right click on it and click on start.
- Once done, check if you are able to synchronize the system time with the Internet time Server.
Method 3: If you’re not able to update the time and you still receive an error, then try the following steps to stop and start the time update application.
- Click on Start; in the start search type cmd.
- Right click on Cmd.exe and choose Run as administrator.
- Type the following command. After typing each command press enter.
net stop w32timew32tm.exe /unregisterw32tm.exe /registernet start w32time
Hope this information is helpful and let me know if this worked.