I am using a Gigabyte GA-EP45-UD3P (rev. 1.0) (F9)
I need to clear the TPM. In the TPM manual it says in the BIOS under "Security Chip Configuration" there should be an option "clear security chip" but there is none. A curious point, if you look at the manual, in the TPM part it shows that this is there in the pic, then tells you to go to the part about configuring the BIOS for more details, but if you then go to part of the manual that covers each screen of the bios and lists the options on that screen it shows it as not there and dose not list the option . Well the case is it is not there, I figured perhaps it needed to be in a cretin state for that to appear, so I have tried enabling, disabling, and having it as enabled/ active, going into windows and choosing clear TPM in the TPM mgt untility then following the reboot and all sort of combinations and in all cases, the "Clear Security Chip" option fails to show.
If I go to windows and use the Trusted Platform Module Management tool and try to clear the TPM, it has me reboot and well it dose not clear it.
The Infineon utility has been useless in trying to clear it and Gigabyte has been unhelpful at best. I tried updating the BIOS, that is why I have the F9 version, no help.
I have spent a good 12 hours over the last two days on this and have failed to find a way to clear it, and my guess is there is a very easy and simple answer I am missing. I can't be the only person who has ever had to do this on a gygabyte board so if you know anything, please help.
I wonder if the Clear Security Chip option only shows when the chip is in Enabled mode.
The MB manual Does show a Security Chip State option of Enabled/Activate. Not sure if that's a typo or if when you first set the chip to Enable it says "Activate" instead of "Activated" meaning it's still looking to be activated, perhaps by the TPM Utilities.
Also, the TPM manual shows usage of the Infineon TPM Driver and the GIGABYTE Ultra TPM Utility. You don't specifically say you used the Gigabyte TPM utility. I just want to clarify that you installed the Driver and Utility.
The TPM manual talks of Initalizing the TPM chip after Driver and Utility installation. Where you able to get this far????
Anyway, I'm only asking this to verify what you did and your results. After all, with out hands on, all I can do to try and help is read the manuals and see if maybe your steps were out of order or something.
The ownership token is taken from a previous user, that data has been transfered to another system, so I will not lose any data by destroying the TPM data or any stored keys.
I want to ensure that I hold the ownership key before using it for bitlock. This means clearing the TPM and then restablishing ownership. Then that key can be placed onto backup and stored in the safe.
I do not want to enable bitlock until I hold ownership of the TPM. It would be necessary if I ever encounter the event of needing to perform an emergency recovery. They key will also be necessary for cretin administrative tasks.
All I can suggest right now, if you haven't already tried it, Clear the CMOS and see if it appears.
I'd say to make a note of any important changes you made to the BIOS settings, (such as voltage tweaks, etc.) but if you already flashed your BIOS to the newer F9 from an older version, all the settings should be at the default settings anyway.
You could also try the F8 BIOS to see if that helps.
Thanks! I will post back if I find a solution. I am still going back and forth with gigibyte support, they seem to keep misunderstanding me and replying with irrelevant solutions. It is a very slow processes, I have an open ticket with them, ever time I reply it takes them a few days to reply back. But I think I may be making progress and I hope that with my last reply they finally understand what I am trying to do.