However if you see your manufacturer or custom BIOS logo remaining whilst Windows starts you are in UEFI mode! In my Windows 8 Dell computer which comes with UEFI BIOS, every time I turn on the machine, it will display a Dell logo with the looping circles at the bottom.Īnother method is to use the MSInfo command. If you see the Windows logo when it boots, you are in old fashioned BIOS boot mode. The simple way to tell if you have UEFI boot mode or not is to watch Windows starting up.

In this article we’re going to tell you a few methods to know if your computer supports UEFI. Secure Boot is one of the new features introduced by UEFI and it has received by far the most attention, as it prevents Linux distributions from being installed on Windows 8 machines. One of the largest underlying changes to Windows 8 is the long-overdue shift from BIOS to UEFI. You can purchase the full version or try the trial version before deciding on making a purchase.ĭownload PCUnlocker with 64-bit UEFI Supportĭownload PCUnlocker with 32-bit UEFI Support

PCUnlocker is available in two version (UEFI 64-bit version and UEFI 32-bit version).

If your computer doesn’t have an optical drive, you can use the freeware ISO2Disc to make a GPT bootable USB drive from PCUnlocker ISO image. Just make a PCUnlocker Live CD and you can then use it to reset lost Windows password on any computer with EFI/UEFI/BIOS firmware. If you forgot Windows administrator password for a UEFI-based computer, you can reset it easily with PCUnlocker. It is possible to have support for both 32-bit and 64-bit UEFI in one BIOS, but it requires additional work and ROM space, so this may not be commonly implemented. A 32-bit UEFI firmware core must be used to install a 32-bit OS and likewise 64-bit UEFI for a 64-bit OS. However, there is a limitation on installing Windows on devices with UEFI firmware. Most of UEFI-based computers come with 64-bit UEFI but there are also some Windows 8 tablets that use 32-bit UEFI, such as Dell Venue 8/11 Pro, Toshiba Encore, Acer Iconia W3/W4, Lenovo MIIX 2, Lenovo ThinkPad Tablet 2 and ASUS Transformer Book T100/T300. Many new computers are shipping with UEFI firmware instead of standard BIOS.

UEFI (Unified Extensible Firmware Interface) is a standard firmware interface for PCs, designed to replace legacy BIOS (basic input/output system).

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