While holding those keys, plug the AC adapter back in.
If the device is detected but "not ready," you may need to manually flash the firmware using the Dell TPM 2.0 Firmware Update Utility . Solved: Dell Vostro 5568 - Alert! TPM device not detected. dell vostro 5568 tpm device not detected repack
If you prefer not to open the chassis, Dell has a built-in recovery sequence to reset the system state. Shut down the laptop and unplug the power cable. Step 2: Press and hold Ctrl + Esc on the keyboard. While holding those keys, plug the AC adapter back in
The most frequent cause for a missing TPM is a firmware state lock that can only be cleared by a total power drain. Shut down the laptop and disconnect the AC adapter. While holding those keys