(usually a CR2032 button cell) likely needs replacement. Once replaced, you must set the correct time in the before booting into Windows. Experts Exchange Troubleshooting WinOLS Specifics Installation Path:
: Copy and paste these commands one by one, pressing Enter after each: net stop w32time w32tm /unregister w32tm /register net start w32time w32tm /resync Additional Troubleshooting