I would strongly recommend you watch some reviews first. It does not seal around the mouth and nose. It is just a fan that makes a constant stream of air to your face, drying inside of your nose, making you more vulnerable to airborne viruses, which would also help the ash go deeper into your lungs.

Had a similar problem with my sister’s computer. Everything connected to the same switch as her computer stopped working after the computer booted. The solution was surprisingly easy, just updating the NIC drivers.