Hello.
From Logitech support:
The time and date on your MX 5000 keyboard
display (LCD) is set automatically using the clock
settings of your computer.
If the time or date is incorrect, you will need
to adjust your computer's time and date settings. To set the clock
on your computer, follow the instructions below for your operating system:
Setting time and date in Windows XP
- Click Start, click Run, type "timedate.cpl", and then click OK.
- Adjust the time and date in the control panel
- Click on Apply, then OK
- The updated time should be shown on your MX 5000 keyboard within a few
seconds
Setting time and date
in Windows Vista
- Click the Start button , click on the Control Panel, click on Clock,
Language, and Region, and then click on Date and
Time.
- Click the Date and Time tab, and then click
Change date and time. If you are prompted for an
administrator password or confirmation, type the password or provide
confirmation.
- Adjust the time and date in the control panel
- When you have finished changing the time settings, click OK.
- The updated time should be shown on your MX 5000 keyboard within a few
seconds
NOTE: This feature requires that Logitech's Mouse
and Keyboard software (SetPoint) be installed on your computer.
If you don't have a copy of the software, try:
http://www.filehippo.com/download_logitech_setpoint/
Hope this resolves your problem.