Often, the TPM is simply in a "hung" state. The Vostro 5568 BIOS has a built-in reset mechanism.
The TPM (Trusted Platform Module) provides hardware-based security functions used for BitLocker, Windows Hello, secure boot, and other cryptographic tasks. If a Dell Vostro 5568 reports "TPM device not detected" (or similar), it can prevent security features from working and may indicate firmware, BIOS, or hardware issues. This article explains causes, step-by-step troubleshooting, checks for hardware quality, and recommended next steps.
Did this error appear or a Windows 11 upgrade ?
