If you may have experienced a problem in which your clocks reset themselves incorrectly every time you boot into Windows. Here's a simple registry edit to fix that.
Essentially, the incorrect clock setting happens because OS X and Linux use GMT
 time while Windows tries to synchronize with your local time zone, 
getting confused when you reboot between the two. Apple's own Boot Camp 
drivers for Windows are supposed to fix this problem, though some users 
have noticed that it still happens even with the drivers installed, and 
some Linux users are left out in the cold. Furthermore, if you have a 
Hackintosh, you can't install the Boot Camp drivers, so you'll need to 
find another way around the problem.
goto  run " regedit "
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation
