Posted 10 January 2011 - 01:56 AM
You'll probably need to take it out and clean it with compressed air.
There should be four screws on the back of the computer where you plug in the power. This is the PSU. Turn off and unplug the computer then press the power button to discharge any leftover power, unscrew the four screws around the power port. You don't need to disconnect the connected devices at the other end, just take the psu out enough so you can see the fan.
When you clean with compressed air, don't hold the bottle sideways or upside down or else the chemicals won't mix and it will come out as a liquid which would be bad.
If the problem persists, new PSU's are only $20 or so on newegg.
>is my pc potentially going to "burn" up if I continue to use with the fan running so loud/hard?
Your computer will turn off automatically if it gets too hot. That won't happen unless the fan totally dies.