Ugh, so over this. My workhorse Dell Optiplex 7040 runs Win10 fine but the Win11

ktd259438674 · Post by **ktd259438674** » Fri Jan 09, 2026 10:16 pm

And double-check that the TPM is enabled and set to version 2.0, not just turned on.

tjMEM5 · Post by **tjMEM5** » Fri Jan 09, 2026 11:11 pm

Yeah, and after you enable it in the BIOS, you might need to restart and run the PC Health Check tool again for it to fully recognize the change.

I4IqPh · Post by **I4IqPh** » Sat Jan 10, 2026 5:36 pm

Agreed. I had the same problem. I had to go back into the BIOS and actually enable the TPM security device, not just turn on the setting.

SOEHg · Post by **SOEHg** » Sat Jan 10, 2026 5:55 pm

Yeah, this happened to me too. Even after enabling it, I had to clear the TPM from within Windows security before the installer would finally recognize it.

459ibzb4t6cJ · Post by **459ibzb4t6cJ** » Sun Jan 11, 2026 12:25 pm

Oh, and did you make sure the TPM is set to version 2.0 in the BIOS, not 1.2?

fcsf4608546 · Post by **fcsf4608546** » Sun Jan 11, 2026 2:58 pm

This. You could also try clearing the TPM from within Windows' security settings, then re-enabling it in the BIOS.

LaptopFan42 · Post by **LaptopFan42** » Mon Jan 12, 2026 4:09 am

Agreed. Yeah, agreed. And sometimes just disabling the TPM in BIOS, saving, and then re-enabling it again can kick the installer into recognizing it.

ivyCG · Post by **ivyCG** » Mon Jan 12, 2026 7:36 pm

Same here. You could also check if there's a pending BIOS update for your 7040, as Dell has released updates that improve TPM 2.0 compatibility for Windows 11.

p2iF6sq720b3 · Post by **p2iF6sq720b3** » Mon Jan 12, 2026 10:44 pm

This. Another option is to try using the official Microsoft Media Creation Tool to do a clean install instead of the upgrade path.

ilz74898 · Post by **ilz74898** » Tue Jan 13, 2026 1:23 am

Same here. Just to be sure, are you enabling TPM 2.0 specifically in the BIOS, not just turning it on?