Heat

You will need to fill in your specs. If it's a notebook, vacuum vents to make sure not clogged with dust. Also can purchase cooling pad for notebook to sit on.

If it's a desktop, vacuum as well and you can install additional fans, check to see if you have a prog. to monitor temp, or it you need to have fans run full all the time.

Also, do you have the processor or video overclocked?

Do you know what part of it specifically is generating the heat?

Speedfan is a good utility to show where your heat is coming from, and you can adjust your fan speeds manually through it as well.

I would recommend taking a look at the temperatures of different components, and that might give you an idea of what is generating heat, or if temperatures are pretty even, then your computer might just be in a bad spot.

Is it a custom build, or a mfg PC?

Please fill out your System Specs.

Jacobe said:

My computer gets pretty hot so I was wondering if putting it on top of the desk would help. (it also gets pretty dusty sitting under there)

This all depends. For a system like that. Good Air Flow is essential.
If where you have it does not get good airflow, then yes, move it.

Another thought is to pop the top off and vacuum inside the pc. Don't know if you've added any components inside, but make sure wires are organized to allow best airflow. Is there a ton of dust inside? Do all fans spin?

Go to WallyMart and get a $6.00 fan and sit it next to you Slimline computer for extra ventilation. IMHO