Generating a complete memory dump in Windows

When troubleshooting certain issues, Avast Support may request you to provide a complete memory dump from your PC. A complete memory dump is not generated automatically, and is usually requested if a kernel memory dump or small memory dump do not help resolve the issue. Follow the steps in this article to generate a complete memory dump in Windows on systems which are not completely frozen.

For information about other types of memory dumps that Avast Support may request, refer to the following articles:

Instructions

  1. Log into Windows as an Administrator, or as a user with administrator permissions.
    If you cannot remember your password, refer to the instructions on the Microsoft website for your version of Windows to recover or reset it:
  2. Download the avkb57.zip file and click Open.
  3. Download the avkb57.zip file, select Open with, then click OK.
  4. Download the avkb57.zip file and, at the bottom of your browser, click the arrow next to the file name and select Open.
  5. Download the avkb57.zip file and click Open.
  6. Double-click the avkb57 folder, then double-click the FullCrashonCtrlScroll.reg file and select Run in the Security Warning dialog.
  7. When prompted, click Yes to allow the application to make changes to your PC.
  8. Click Yes, then OK to apply the necessary changes to your Windows registry.
  9. Restart your PC, log into Windows with administrator permissions, and wait until the system or program freezes again.
  10. Manually force a Windows crash (BSOD) by holding down the right CTRL key and pressing the Scroll Lock key twice (right CTRL + 2x Scroll Lock: You can find the CTRL key under the SHIFT key, and the Scroll Lock key in the top-right corner of your keyboard). A blue screen (BSOD) appears. The system generates a memory dump (progress is indicated in percentage) and restarts automatically.
    If your PC does not restart automatically, restart your PC manually by pressing the Reset or Power button.
  11. Log into Windows with administrator permissions and locate the MEMORY.DMP file in C:\Windows (by default).

Once you create the dump file, send it to Avast Support. Because the dump file is larger than 5 MB, upload it to the Avast FTP server using the instructions in the following article:

For more details about this troubleshooting procedure and the registry entries contained within the FullCrashOnCtrlScroll.reg file, read the following article on the Microsoft website:

  • All available Avast software products
  • Microsoft Windows 10 Home / Pro / Enterprise / Education - 32 / 64-bit
  • Microsoft Windows 8.1 / Pro / Enterprise - 32 / 64-bit
  • Microsoft Windows 8 / Pro / Enterprise - 32 / 64-bit
  • Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate - Service Pack 1, 32 / 64-bit
  • Microsoft Windows Vista Home Basic / Home Premium / Business / Enterprise / Ultimate - Service Pack 2, 32 / 64-bit

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