If you make a text file and copy and paste this in *also modifying the part where it asks for your computer name* and then rename it to timesync.bat ...this will sync your time clock. I run win 7 and i do have to run it as Administrator otherwise it gives access denied errors.
If this does not work, open a command prompt as administrator and type w32tm /unregister then again w32tm /register
THEN check and make sure windows time service is in services and on and running. Once that is verified simply run the bat file.
I put a pause at the end so you can see when it runs whether it worked or not. Simply hit any key to close the dos box.
Best of Luck!
Chris
w32tm /config /syncfromflags:manual /manualpeerlist:time.windows.com
w32tm /config /computer:(YOUR COMPUTER NAME) /update
w32tm /resync
pause