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Setting Time and Date, Clock Losing Time, Time and Date Incorrect (Windows 7)

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This document pertains to HP PCs with Windows 7.
The computer uses the date and time to identify when files are created, modified, or deleted; to manage email messages and catalog system restoration points; and to manage many other important system related activities. This document provides instructions on how to change the date and time settings on the computer, how to enable Internet Time, and how to troubleshoot common computer clock issues.
The computer clock is in the taskbar at the bottom left of the computer screen.
Figure 1: Time and date displayed from taskbar
Time and date displayed from taskbar

Windows 7 Date and Time set up

Follow these steps to change the date and time settings.
  1. Click the displayed time in the taskbar and then click Change date and time settings.
    Figure 2: Date and time settings encircled in red
    Date and time settings encircled in red
    Figure 3: Date and Time window
    Date and Time window
  2. Click the Date and Time tab.
  3. Click Change time zone. Make sure the correct time zone is selected. Place a checkmark next to Automatically adjust clock for Daylight Saving Time if it is not already selected, and then click OK.
    Figure 4: Time Zone Settings
    Time Zone Settings
  4. Click Change date and time.
  5. Click the small left and right arrows in the calendar to select a month and year, and then click a day within the month.
    Figure 5: Date and Time Settings: Date
    Date selection in the Date and Time Settings window
  6. Change the time by entering the hour, minute, AM or PM, or by clicking the up and down arrow buttons. Click OK when the time matches the current time.
    Figure 6: Date and Time Settings: Time
    Time setting in the Date and Time Settings window
    The time zone, date, and time have been set.

Synchronizing time with Windows 7 internet time server

Windows can automatically synchronize the date and time with a time server to make sure the time displayed on your computer is accurate. Follow these steps to enable Internet Time:
NOTE:If your computer is part of a domain, the Internet Time feature is not available. Contact your System Administrator for clock synchronization information.
  1. Click the displayed time in the taskbar and then click Change date and time settings.
    Figure 7: Change date and time settings
    Change date and time settings
    Figure 8: Date and Time window
    Date and Time window
  2. Click the Internet Time tab, and then click Change settings.
    If you are prompted for an Administrator password or confirmation, type the password or provide confirmation.
    Figure 9: Internet Time tab
    Internet Time tab
  3. Make sure that Synchronize with an Internet time server is checked.
    Figure 10: Internet Time Settings
    Internet Time Settings
  4. Make sure the computer is connected to the Internet and click the Update Now button.
    The computer connects to an Internet server and updates the time on the computer.
    NOTE:If the computer fails to receive an update from the selected Internet time server, a message opens stating that an error has occurred. Select a different server and try again.
  5. Click OK.
    Your computer's clock will now regularly syncronize via the Internet.

Fixing Windows 7 computer clock issues

Computer clock issues can be caused by software, driver, or hardware problems.
Read a section below that matches your symptom or error, and follow the troubleshooting steps provided.
NOTE:Troubleshooting computer clock issues can require restarting the computer or monitoring clock performance over time. HP recommends printing this document for future reference.
If the time in Windows does not match the current time, or has to be reset often, use these steps to troubleshoot the problem.

Step 1: Disabling or enabling Windows 7 internet time settings

Some computers can be configured to synchronize the computer clock to an Internet time clock when the computer connects to the Internet. Synchronizing the computer clock with the Internet time usually provides the most accurate method of keeping time and is normally recommended. However, in some cases, connecting to the Internet time clock server causes the computer clock to display the wrong time.
Complete the following actions to verify the correct time zone is set and to toggle the Internet time setting to improve the accuracy of the computer clock.
  1. Click the displayed time in the taskbar and then click Change date and time settings.
    Figure 11: Change date and time settings
    Change date and time settings
    Figure 12: Date and Time window
    Date and Time window
  2. Click the Date and Time Tab.
  3. Click Change time zone. Make sure the correct time zone is selected. Place a checkmark next to Automatically adjust clock for Daylight Saving Time if it is not already selected, and then click OK.
    Figure 13: Time Zone Settings
    Time Zone Settings
  4. Click the Internet Time tab, and then click Change settings.
    NOTE:If your computer is part of a domain, the Internet Time feature is not available. If the Internet Time tab is not displayed, go to Step 2: Updating the BIOS to continue troubleshooting or contact your System Administrator.
    If you are prompted for an Administrator password or confirmation, type the password or provide confirmation.
    Figure 14: Internet Time Tab
    Internet time tab
  5. Change the Automatically synchronize with an Internet time server setting.
    • If it is already checked, remove the check mark from the Automatically synchronize with an Internet time server option.
    • If it is not already checked, select the check mark on the Automatically synchronize with an Internet time server option.
  6. Click OK, and then restart the computer.
    Monitor the computer clock to see if the problem continues. If the computer clock remains accurate, you are done. Otherwise, complete these steps again to reset the Internet time setting back to its original condition, and then go to Step 2: Updating the BIOS .

Step 2: Updating the BIOS

If your computer has a BIOS update available, the update might fix time-related problems. Refer to the HP support document HP Desktop PCs - Updating the BIOS or HP Notebook PCs - Updating the BIOS for directions to find and update the BIOS.

Step 3: Removing and reinstalling the real-time clock

Remove and reinstall the Real-time clock by starting the system in Safe mode. Use the following steps to perform this task:
  1. Turn off the computer.
  2. Turn on the computer and immediately begin pressing the F8 key repeatedly until a Windows Start-up Menu appears.
  3. Select Safe Mode and then press the Enter key.
    CAUTION:Do not attempt to remove and reinstall the Real-time clock in normal boot mode. System damage can occur.
  4. Click Start , type Device Manager in the Search field, and then select Device Manager from the list.
  5. In the Device Manager window, double-click System Devices.
  6. Right-click System CMOS/real time clock, then click Uninstall, and then click OK.
  7. When the System Settings Change window appears, click Yes to restart the computer. The real-time clock reinstalls automatically.
Computers contain an internal backup battery to keep time in the same manner as a watch keeps time. The internal battery is referred to as a CMOS or Real-Time Clock (RTC) battery. Computers rely on the internal backup battery to keep time when they are off. The internal CMOS or RTC backup battery should be replaced when it runs low on power.
When starting the computer, if your computer displays the error code CMOS Time and Date Not Set, the CMOS or RTC battery probably needs to be replaced. Follow the links and directions below, depending on your type of computer, to find information on replacing the CMOS or RTC in your computer.
  • For all Desktop computers (except TouchSmart and AIO) go to HP and Compaq Desktop PCs - Removing and Replacing the CMOS Battery and follow the directions to replace the CMOS battery.
  • For TouchSmart, All-In-One (AIO), and Notebook computers, complete the following actions:
    1. Go to the HP Consumer Support Web site.
    2. Type your computer series name and real-time clock in the search field at the top of the web page, and press the Enter key.
      For example, type HP Envy 15-3000 Real-Time Clock to find a list of documents with information on the HP Envy 15-3000 series computer and real-time clock issues.
      Figure 15: Example of HP Customer Care search
      Example of HP customer care search
    3. In the search results, look for a link to a document describing how to remove and replace the Real-time Clock or CMOS Battery for your TouchSmart, AIO, or Notebook computer series, and then click the link.
      CAUTION:If you cannot find a document explaining how to remove and replace the CMOS or RTC battery for your specific computer series, do not attempt to replace the battery. Contact an Authorized Service Center for repair.
    4. Follow the directions listed in the document to replace the CMOS or RTC battery.
On some computers, the system clock stops or reset after the computer resumes from hibernation. Updating the BIOS might fix the problem. Refer to the HP support document HP Desktop PCs - Updating the BIOS or HP Notebook PCs - Updating the BIOS for directions to find and update the BIOS.

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