Some Computer Helps

Q: My computer is hot and/or loud.

This is often a dust-accumulation issue. All computers should be dusted regularly. Get a can of compressed air and blast out the fans, vents, and any other orifices, including a full interior spray if you have a desktop.
You can use a aircompressor too, but compressed air does build up static electricity, which will kill your computer, so never touch the can/metal nossle on your inner computer.