Activating TPM 2.0
Windows 11 strictly requires an activated TPM module. The Trusted Platform Module (TPM) is used to enhance the security of your PC. Among other things, BitLocker and Windows Hello use the module to generate secure cryptographic keys. If the TPM is disabled on your computer, you can easily enable it in the BIOS settings.
Restart your PC. As soon as the DELL logo appears, repeatedly press the F2 key until the BIOS settings are displayed. Now click on the small plus (+) next to Security. Then click on TPM 2.0 Security. You can enable the TPM there (see Screenshot #1).
After TPM has been enabled, you should see the following screen.
To apply the settings, click Apply and then Exit. The computer should then boot up normally, and the PC Health Check should indicate that TPM 2.0 is now active.