The BIOS in this system is Not Fully ACPI Compliant

[Martin00]

When I try to install Windows 7 64bit Home Premium It shows me an error The BIOS in this system is Not Fully ACPI Compliant. The blue screen shows shortly after Starting Windows screen. Originally it had installed windows 10 64bit. Is there a way to deactivate the ACPI module to install Windows 7?

[Dilip_18]

Hi@Martin00,

Welcome to the HP Support Community! I'd like to help!

I see you are experiencing Bios issues with the OMEN By HP. However, you can try changing some settings in BIOS to make it compatible for Windows 7 installation.

You can follow these steps.

• Get into BIOS
• Go to the BOOT tab
• Select Boot Mode and change the value to Legacy Support.
• Go to the Exit Tab
• Select OS Optimized Defaults and change the value to Other OS.
• Now select the Load Defaults Settings and Load Optimal Defaults.
• Save and exit.

Even after following these steps, if you’re facing issues try changing boot mode and boot priority and see.

Hope this helps! Keep me posted. 

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