How to manually update the BIOS on an HP a1600n desktop with A8M2N-LA motherboard

After wrestling with this over 3 days, I found out a way to update the BIOS on this machine and thought I would post it online. Many people are having difficulty applying the HP update from the HP site especially on Vista and Windows 7. Without this update, the processor does not support virtualization.

1. Download processmon from the windows site after searching on Google.
2. While running the BIOS update, just before it fails, look into the processmon to see which folder the installer.exe is running from.
3. Copy the contents of the temp folder to the desktop before closing the failed BIOS update message.
4. Open the desktop folder and set the winflash.exe properties to vista compatibility and run as administrator.
5. Run winflash.exe, select the 507.rom file from the file menu
6. Select update all in the left side options.
7. Say update on the toolbar.
8. When the modal dialog opens up, select update.
9. Let it update, and it will automatically restart windows
10. When it restarts it will show 5.07 bios version
11. Select F1
12. Enter BIOS utility and make sure virtualization is enabled
13. Make sure Audio is enabled or set to Auto (others have mentioned this problem).
14. Save and Exit BIOS.

REF: http://www.ecs.com.tw/extra/flashutl/winflash.htm

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