Enable Secure Boot to make sure you’re booting your Windows install media in UEFI mode. Since that doesn’t seem to be happening, try these things: Windows Setup is supposed to handle registering the newly installed Windows environment into the UEFI firmware. Lastly you can make a usb2 Live Linux pen drive with Casper persistence and it will F12 boot on the 790 just fine. install 10 in legacy MBR mode and again Linux ALONGSIDE windows. You can also install 10 in legacy MBR mode and again Linux ALONGSIDE windows. Windows 7 cannot remove windows 10 MSR or UEFI. Windows 7 and 8 and 10 work fine on the 790 but there are no win10 drivers so you use vista or win7 WDDM drivers and Linux in legacy mode. You can do the same with 10 but you also have to clean the drives and remove the MSR and GPT partitions on all drives. You then INSTALL LINUX Alongside windows. Installing AHCI or ATA in legacy MBR mode will allow windows 7 to be installed and boot. You will have to use DBAN or Diskpart to CLEAN ALL Drives blank. Windows 7 cannot remove windows 10 MSR GPT or UEFI. Operating system physical memory is defined according to the ACPI 3.0 specification.Ĭlass 2.3.1 UEFI BIOS must have windows key built in and must be digitally signed with a Windows, WHQL, ELAM, or Store certificate (WHQL 64 bit). Platform firmware must ensure that operating system physical memory is consistent across S4 sleep state transitions, in both size and location. Is required for Windows 10 security features like Secure Boot, Windows Defender Credential Guard, and Windows Defender Exploit Guard.
Secure boot certificates cannot be added as a bios update by end users. The 790 allows legacy as well as 32 bit windows xp and therefore will never have secure boot due to lacking ACPI 2.0 and UEFI 2.3.1įirmware that meets the UEFI 2.3.1 specifications
Dell optiplex 3020 ram type 64 Bit#
It also means windows 10 only and 64 bit only from now on. Intel will be only supporting UEFI Class 3, which means no legacy support of CSM. New systems are class 3 bios with no legacy booting of anything.
The 790 has class 1 Bios.Ĭlass 2.3.1 UEFI bios is required for GPT UEFI Secure boot. Class 1 UEFI Bios does not have GPT or Secure boot and never will.