Noob here. Dell 9020M Core i7 12/2015.

Today I successfully migrated to GUID from MBR. While in the BIOS fw settings, I enabled TPM > Apply. No there seems to be no turning back. Have I totally hosed my system? Is there a way to undo this? The system seems to be working fine, I left TPM (*)deactivated. But I see I am way out of my element here.

Thanks for any help,

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