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  • Information
    Important Print Security Update

    HP was recently made aware of a vulnerability in certain inkjet printers by a third-party researcher. HP has updates available for download to address the vulnerability. Details and more information are available in the Security Bulletin

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HP and Compaq Desktop PCs - The Computer Clock Loses Time (Windows 7)

This document applies to HP and Compaq desktop computers using Windows 7.
The time displayed in Windows does not match the current time. The time in Windows has to be reset often. Use the steps in this document to troubleshoot time-related issues.
Step 1: Disabling or enabling Internet time
If Internet time is set and you are connected to the Internet, the computer connects to an Internet time server and synchronizes the time to the time on the server. Internet time can provide an accurate method of keeping time and is normally recommended. However, in some cases, Internet time might actually cause problems. Use the following steps to disable or enable the Internet time setting depending on what is currently selected.
  1. Click Start , Control Panel, Clock, Language, and Region, and then click Date and Time.
    Figure : Date and Time
  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 : Time Zone Settings
  4. 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 : Internet Time tab
  5. Make sure that Synchronize with an Internet time server is checked.
    Figure : Internet Time Settings
  6. 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.
  7. Click OK and try using the computer for a few days. If time continues to be lost and causes problems, continue using the rest of the steps in this document.
      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. If the computer fails to receive an update, click OK and continue with rest of the steps in this document.
Step 2: Updating the BIOS
If your computer has a BIOS update available, the update might fix time-related problems . To find out if a BIOS update is available for your computer, refer to the HP support document Updating the BIOS.
If time continues to be lost and causes problems after updating the BIOS or you cannot update the BIOS, continue to the next step.
Step 3: Removing and reinstalling Realtime clock
Remove and reinstall Realtime clock by starting the system in Safe mode. Use the following steps to perform this task:
  1. Turn on 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.
  4. Click Start , and then click Control Panel.
  5. Click System and Security, and then click System.
  6. Under Tasks, click Device Manager.
  7. Click the Plus Sign (+) next to System devices.
  8. Right-click System CMOS/real time clock, click Uninstall, and then click OK.
  9. When the System Settings Change window appears, click Yes to restart the computer. The real-time clock reinstalls automatically.
Step 4: Replacing the CMOS battery
Desktop computers contain a battery to keep time in the same manner as a watch keeps time. Like a watch, the battery should be replaced when it runs low on power. Replace the battery using the following steps.
Click the heading or the accompanying plus (+) sign to expand the information.

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