David's PC is starting to make loud fan noises. He cleaned out the fans with a vaccum cleaner, but that didn't help. What can he do? Leo says it could be that an update is starting to make the fans run harder. It's not uncommon for an update to make fans louder. It may also be that his fans are starting to wear out and it could be time to replace them. The good news is that they are easy to replace. David can do it himself.