Depending on the time zone that you live in, your computers internal time may or may not be set correctly.
To set or change the time, click on the START menu and select the CONTROL PANEL tab.
Double click on the DATE/TIME/LANGUAGE/REGIONAL options
Double click on Change the date and time.
From this screen, you can change the date, time, time zone, and set DST. Once everything is set correctly, click OK and your PC will be set.