Regardless of the TPM version, Windows 11 is not supported on this system -- the CPU is too old (you need a 2018 or newer, 8th generation CPU for Windows 11 support). You can install Windows 11 without TPM support -- but bear in mind Microsoft has publicly stated that though it will work for now, an update may come in the future that requires a supported CPU -- at which point it'll be end of the road for this system and Windows 11.  
I would like to upgrade my m6700 to Windows 11, but everything is pointing in the direction of not possible. The TPM is 1.2, rather than 2.0.  I have tried up update, and trouble shoot, but it appears not to be possible - resulting in "system tpm query failed," when trying to install.  I have followed online trouble-shooting instructions ([URL] and [URL] without any success. running the Windows 11 Healthcheck, it also suggests that my processor is not supported (Intel i7 3940XM CPU [NAME].00GHz). If anyone else has had success, I would very much welcome your insight. With thanks in advance. N
TPM upgrade to 2.0 for m6700 & Windows 11