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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 PCs - The Computer Restarts Unexpectedly (Windows 10, 8)

This document is for HP and Compaq computers and tablets with Windows 10 and Windows 8.
If Windows suddenly restarts without warning, or restarts when you try to shut it down, it might be caused by one of several issues. Windows could be set to restart automatically when certain system errors occur. A BIOS update can also resolve the issue. Use the information in this document to resolve issues with the computer restarting unexpectedly.
If the computer restarts unexpectedly and then does not start to Windows, see one of the following documents for steps to resolve this issue:
In addition to the steps in this article, updating video card drivers is known to resolve many of the problems that can cause the computer to restart.
Windows restarts for no apparent reason
Follow the steps in this section, in order, until the problem is resolved.
Step 1: Disable the automatic restart option to view error messages
Many hardware driver or operating system errors will cause the computer to display a specific error message before stopping the operation or shutting down the computer. However, if the Automatically restart option is enabled, an error message might not be displayed despite an error taking place. Disable this option to allow the computer to display the error message.
Follow these steps to disable the Automatically restart option:
  1. In Windows, search for and open View advanced system settings.
  2. Click Settings in the Startup and Recovery section.
    System Properties window
  3. Remove the check mark next to Automatically restart under System Failure, and then click OK.
    Location of the Automatically restart check box
  4. Restart the computer.
      note:
    The computer no longer restarts automatically when a problem occurs. Instead, a blue screen displays with more useful information. You can now search for a resolution using the information in the error.
Step 2: Check for failed hardware
Hardware problems can cause the computer to restart unexpectedly. For more information about checking for hardware problems, go to Testing for Hardware Failures.
  note:
Failed hardware is usually caused by increased heat inside the computer. Over time, cooling areas can become clogged with dust buildup causing temperatures inside the case to rise. For more information, see Reducing Heat Inside the Laptop to Prevent Overheating for notebook computers, or Computer Overheating Prevention for desktop computers.
Step 3: Update the BIOS
A BIOS update can resolve issues with the computer shutting down unexpectedly. Follow the steps in the following sections to use HP Support Assistant, the HP website, or HP SoftPaq Download Manager to check for and download any BIOS updates.
Step 4: Perform a System Restore
If the issue has begun recently, restoring the computer to a point before the problem began can resolve the issue. For more information about using system restore, refer to Using Microsoft System Restore (Windows 10, 8).
Step 5: Recover the computer
If the other steps in this document failed to resolve the issue, recover all software on the computer back to its original configuration perform a system recovery. Depending on your version of Windows, go to one of the following HP support documents for more information:
Windows restarts after a Windows Update
Your computer might experience system restarts after running Microsoft Windows Update or performing an Automatic Update.
If your computer restarts automatically after a Windows Update, perform the following steps.
Step 1: Uninstall the latest Windows Update
Use the following steps to uninstall the latest Windows Update.
  1. In Windows, search for and open View installed updates.
      caution:
    Make sure you have the installation discs and installation keys for software programs that you want to keep.
  2. Check the Installed On column to find the most recent update.
    Write down the exact name of the update.
  3. Click the name of the update to uninstall, and then click Uninstall at the top of the updates list.
    Uninstall option at the top of the updates list
  4. Read and respond to any messages that might open while the update is being removed from your computer.
  5. If the problem is resolved, proceed to the next step to prevent the update from reinstalling on the computer.
    If the problem is not resolved, repeat these steps with older updates until the problem is resolved.
Step 2: Prevent Windows updates from reinstalling the update in Windows 8
In Windows 8, Windows Update might try to reinstall updates that you uninstall. Use the following steps to prevent Windows Update from reinstalling the update on your computer.
  note:
The following steps do not apply to computers with Windows 10. In Windows 10, all Windows updates are automatically downloaded and installed, and you cannot choose which updates to install.
  1. In Windows 8, search for and open Windows Update.
    Figure : Selecting Windows Update
    Selecting Windows Update from the search results
    Windows Update opens on the Windows desktop.
  2. On the Windows Update window, click Change settings in the left-hand column.
    Location of Change settings in the left-hand column
  3. In the Important updates box, select Check for updates, but let me decide whether to download and install them, click the check box next to Give me recommended updates the same way I receive important updates, and then click OK.
    Changing  Important and Recommended updates
  4. On the Windows Update window, click one of the links under You're set to automatically install updates. Example: 1 important update is available.
    Links to available updates in the Windows Update window
  5. On the Select updates you want to install window, if the update you uninstalled is listed, right-click the update and select Hide update.
    Location of Hide update
    The update is now hidden and will not be installed. To install hidden updates in the future, click Restore hidden updates in Windows Update.

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