I just did a system update and upgrade on my Arch desktop. Just after getting past GRUB, I get this scrolling on the screen forever: ACPI Exception: AE_NOT_FOUND, while evaluating GPE method [_L6... HP PCs - HP 3D DriveGuard Is Displayed as an Unknown Device (ACPI\HPQ0004 or ACPI\HPQ6007) After Upgrade to Windows 10 Has Completed After an upgrade from Windows 7, 8 or 8.1 to Windows 10 is completed, the HP 3D DriveGuard driver is displayed as an unknown device. These messages indicate that there are BIOS errors related to power management control and PCI root bridge enumeration data due to an improper ACPI table. While these should not cause problems with regular system operation, they could cause issues with power management functions. Please contact your system vendor and ask for an updated BIOS. Here’s a true example of Windows 10 ACPI_BIOS_ERROR on Dell. Dell 3147 “ACPI BIOS ERROR” on Windows 10 May 2019 update... Hello, I recently installed the May 2019 update for Windows 10. I noticed that the Intel Trusted engine isn’t installed on that laptop. The red screen indicates that an ACPI issue with hardware or the computer BIOS, we recommend making sure you have the latest hardware drivers and BIOS updates. The blue screen indicates a software ACPI or another hidden problem, make sure you have all the latest software patches for your programs and operating system.