The registry values listed in this article are located in the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters
Command Used: w32tm /config /manualpeerlist:pool.ntp.org /syncfromflags:manual /reliable:yes /update
Than type:
w32time stop
w32time start
http://www.techrepublic.com/article/synchronize-time-throughout-your-entire-windows-network/