I was checking to see if I could possibly upgrade my old dell e6400 to w11. I ran the pc health test to see if it can be done and the test results said I have to have secure boot, tpm 2.0 and the processor is not supported. Is there a processor that I can upgrade to that would be supported and support secure boot which my system information screen says is unsupported, or is it a BIOS function? I think there are tpm modules that I can upgrade with. I am continuing to do my own research on this subject.