The date and time settings on some computers go awry sometimes. One of the most common reasons why they suddenly get wrong when all of the time before that they were right is because of the battery. If the battery is weak then it will certainly result in you seeing incorrect date and time values on your computer. If this is the case with you, change the battery. After changing the battery, and even if there is nothing wrong with it and the time and date are wrong, you will need to reset them both.

Below is an image of how the date and time settings window under the Windows OS looks:

It is quite easy to make the adjustments. First of all, to get to this window, double-click on the clock in your System tray (located at the bottom right hand corner of your screen). To adjust the time under the Date & Time tab, highlight the hours and type in the right hour or use the up/down arrow keys beside it to make the changes. Do the same for the minutes, seconds and AM/PM respectively, then click on Apply. To adjust the date, select the month from the drop down box and scroll to the correct year. Then click on the correct date of the month and click on Apply.

To adjust your Time Zone, click on the Time Zone tab and use the arrow beside the time zones to selelct the one that applies to your part of the world. If you have DST (Daylight Savings Time), click on the box beside it and then click on Apply. When you are finished, click the OK button.