The computer has a lot of dust, and it is normal now. Can you not clean it?

It's hard to say. I am also the network administrator of the company. I'm in a similar situation to you, but I burned three motherboards. Hehe, the power fans are all gray, and then the power fans don't turn to burn out. The CPU fan hasn't turned over yet But I think it's better to remove it if conditions permit. There are no fans or brushes in our company. Ha ha.