[BlackOxide]

Cheers, that's the info I needed

I found a very helpful disassembly guide on that model here. On this model of laptop there isn't a cover you can just unscrew on the back to get directly to the fan. What I would recommend here is to just blow some compressed air through the CPU vent on the side. Once you have cleared the dust from here, it should help cool the laptop down I have circled the location of the vent you want to be blowing the air through on the picture below. Note - The vent is actually on the side of the laptop near the red circle not on the underneath.

You should be able to pickup the compressed air online or in Computer/Electronic departments and stores.