Modern machines have used a UEFI BIOS for a long time. The advantages are several fold but the primary one is the ability to use a larger than 2TB system volume. Windows 11 is is bigger than Windows 10 and it can squeeze into a 64GB SSD. Realistically Windows is much better off with 128GB or better to handle a swapfile and hibernate file etc.

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To reset the TPM in Windows 11 is straight forward. Press Win+R and enter tpm.msc to load the tool. On the right is an option to clear the TPM which will reboot windows. At the reboot its now safe to enter the BIOS to flash a new image.

At the boot flash a new BIOS be alert that this resets everything so make sure UEFI is enabled and that the TPM and Secure Boot are all enabled. This may take a few cycles to get the BIOS configured properly.

After upgrading the BIOS, Windows 11 will start up properly and face recognition etc work fine. The TPM is simply a store for certificates. One such certificate is the Windows license. The TPM is also used by Bitlocker when more security is required. Windows wizards may be enabled if the password is needed to set a new PIN etc.

With MSI the M-FLASH is the safest way to upgrade the BIOS. Other brands of motherboard are similar. The MSI function reboots the machine before offering an option to install a BIOS image from a USB storage device.

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