I Have the same problem on vostro 5568.

Someone help us...

I have the same issue..

I have the same problem except I have an Vostro 5568. I usually don't update for just this reason but Dells site said this bios was an urgent update. Whats worse is my laptop is just over a year old and only a month out of warr. I can't roll back back and reinstalling did not work. 

same issue from Vostro 5468.

Is there any solution there?

The same here after upgraded, Hope to release new firmware to fix asap from Dell.

I have a Vostro 5568 too and facing the same problem. I downloaded Vostro_5468_1.11.0 bios driver to see if this fixes the problem. Unfortunately, it doesn't.

How could an organization like Dell release drivers without proper QA? Why take something which works and then break it?

Does anyone from the Dell customer support has any update for us please?

uninstalL TPM from the Device Manager.

Next reload Intel Chipset Driver.

TPM is now intel based.

Trusted Platform Module (TPM 2.0) - TPM 2.0 is a microcontroller that stores keys, passwords, and digital certificates. A discrete TPM 2.0 also supports Intel® vPro™ Technology and Intel® Trusted Execution Technology (Intel® TXT).

@speedstep 

the Thing is that the TPM is not detected in the BIOS in the first place so obviously it's not listed in Device manager.

i tried to reinstall the Chipset driver , didn't help.

Yeah! Dell is Brilliant

as it's not enogh that the vostro 15 5568 is geniusly designed.

they send updates that cause problems and not being responsible about that.

the vostro TPM firmware is not available for some reason!

I've been in contact with the "Support" they offered me to replace the motherboard and make me pay for their mistake.

TPM is either there or its not.  It cant be added later.