[QUOTE=Ella;2214383]But I think maybe there are some methods so that it will be repaired for good. I just want to get the method to do that.[/QUOTE]
Look, you obviously do not understand what we are saying.
A clean room means an industrial clean room where the dust particle that would kill production of microchips and hard drives are filtered out of the atmosphere to an incredible degree. These particles can not usually be seen by the naked eye.
Manufacturers use special tooling and jigs during the production of the items.
If you have access to these why are you asking for our advice. If you do not forget it and go and buy a new drive and put this down to experience.