I have a TP Link Deco and a main router.

What do you mean by this? You are using two routers? Or you have an extra on hand? How many Deco devices?

You’re mostly ranting here and not providing information. Details will help anyone offer support.

What are you talking about with a TMP (TPM? Maybe?) setting in bios? What was it labeled? Did you follow a guide or anything?

What sort of computer do you have? Brand, model, etc. What version of windows are you on now? (press start, type ‘winver’.

Can you restart? Does the behavior continue?

I suspect the dism commands to fix your restore image, then current install would be a good idea: https://lazyadmin.nl/it/dism-command/