The fact that you have Enable Legacy Option ROMs enabled means that you do not have Secure Boot enabled. Uncheck that box and enable Secure Boot, which you need for Windows 11 anyway. Then check the PTT box and click on apply. You need UEFI, Secure Boot, and PTT for Windows 11 to meet MS Windows 11 system requirements on your system (which Dell supports on Windows 11). And for anyone reading this that does not have a supported system, my reply is meant for the Inspiron 3671and only that system in this post. Yes Windows 11 can easily be installed on unsupported systems.
Hi , In the moment my desktop doe not allow to install Windows 11 because the TPM is not available I have an Inspiron 3671 which has the below settings it boots from the SSD ... [IMAGE]   Can I remove this setting ....[IMAGE]   In order to enable TPM? At the moment I am not able to set this tick!!! [IMAGE] Thanks a lot for the help.  
I want to add TPM compatibility to my Inspiron 3671