oh.. for a g55, i think you need to send it in to service center for further inspections
😕 unlike g75, we don't get to see the fans in our g55 (hence the maintenance can only be done by authorized technicians from ASUS, if you need to preserve the warranty).
what you could do now is to use compressed air to blow the vents when the laptop is turned off. you can try to search through the forum for similar threads.