Once you fix the dell vostro 5568 tpm device not detected repack , stop it from breaking again:
Residual power can prevent the BIOS from communicating with the TPM chip BIOS Configuration: dell vostro 5568 tpm device not detected repack
If you're seeing the "Alert! TPM device is not detected" error on your Dell Vostro 5568 Once you fix the dell vostro 5568 tpm
Q: Why is my TPM device not detected on my Dell Vostro 5568? A: There are several reasons why the TPM device may not be detected, including firmware issues, driver problems, hardware failure, and BIOS settings. including firmware issues