Why does my laptop make noises when it is turned on?

You might be hearing the hard drive. You should be hearing a gentle whirring noise accompanied by periodic clicking. This is normal. You may hear it clicking when you're loading a program, or while you're downloading a large file.

If you're hearing some constant, harsh grinding and clicking (louder than what it was in the past), the hard drive could be fixing to die. I'd back up your important data immediately, if that is the case.

There is a large cover on the bottom that you can remove with screws. You could open it and listen closer to see which component produces the sound you speak of.

Hello,

The clicking noise maybe coming from the hard drive. Overtime, your hard drive can collect dust, so what you can do that is really easy is use an air blower or hair dryer (must be on cool air). Use this tool and apply air between all the keys and the back of the device where the hard drive is. Afterwards, you shouldn't be hearing that clicking sound again.