Windows 11 introduced new system requirements for the operating system. Two of these requirement checks, TPM 2.0 and Secure Boot, can be bypassed during installation from a bootable ISO.
To bypass the TPM 2.0 or Secure Boot check(s) while in the installation screen, press SHIFT + F10 and a command window will open.
Bypass TPM 2.0 Check
REG ADD HKLM\SYSTEM\Setup\LabConfig /v BypassTPMCheck /t REG_DWORD /d 1
Bypass Secure Boot Check
REG ADD HKLM\SYSTEM\Setup\LabConfig /v BypassSecureBootCheck /t REG_DWORD /d 1
Close the command window and click back on the installation screen to go back one and then click to continue the installation.