[NAME]  -  Don't know what you're expecting to see in Disk Management. My XPS 8930 originally didn't qualify for Win 11 according to their PC Health test app and TPM was grayed out in BIOS setup. All I had to do was disable Legacy Options ROM which I had previously enabled, save the change and exit setup. Now when I open BIOS setup, TPM is enabled (I didn't even have to change it manually). Now the PC passes both Microsoft's Win 11 test and WhyNotWin11 .  
I am trying to get my XPS 8930 ready for Windows 11 later this year. I ran the Microsoft tool to see if my computer met specifications. It said that TPM is not enabled. The Dell manual states TPM is enabled by default on my model. My BIOS is up to date. The computer is only three years old and I don't want to buy a new one just to get TPM enabled. Is there a way I can get TPM enabled on my computer?
XPS 8930, cannot enable TPM for Windows 11