After install Mac OS X, Win7 will show wrong time, usually hours delay, for this case can edit registry to fix it

1. Win + R(Start > Run), Type regedit Enter Open Registry
2. Find HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation\
3. in right window, create DWORD, rename: RealTimeIsUniversal, Value: 1, keep default encode
4. After reboot, Win7 will show correct time.
5. try avoid online time adjust after this change.