Next hair dryer clean the intake filter, and maybe it will last even longer. The cover should screw or pop off, then wash it with warm soapy water and let it air dry 🙂

Tbh, I bonked mine on the countertop and that must have knocked something lose, got another 2 years out of that hair dryer 😂 But only bang/hit it as a last resort. It also might have overheated and just needs to sit around unplugged for a few days.