|So I have an Acer Aspire 5720z that was overheating, I was able to fix the issue, but I see a lot of people have been asking the same question. Well here's what you can try and see if it fixes the issue:|
Turn off the computer, remove the battery and hold down the power button for 30 seconds.
Flip the computer over and remove the 4 screws that hold down the large area on the bottom (where the RAM, Wireless card, etc. is at (you can see the fan vent on the bottom left (if the battery bay is closest towards you))).
Now after all 4 screws are removed, take like a butter knife (NOT A SERRATED KNIFE) or a putty knife would do too, and gently go around the edges to pry up the large plastic piece. You can see where the finger slot is. Once that cover is off, you should see the fan. Clean that first using a small brush and a damp cloth.
To do so do the following:
Brush off some of the dust, then wipe on damp cloth, keep doing this until the area is free of debris. Otherwise if you have a can of air you can do it that way. The next part will require the brush and damp cloth.
Now around the fan there are 3 screws, using a Philips screw driver take out the 3 screws. Now if the fan is closest to you, pick it up gently and flip it to the right (you can see which way the wires go and connect to it). IF YOU DO THIS WRONG YOU CAN DAMAGE THE FAN AND RUIN THE COMPUTER!
Now spin the computer 180 degrees and you can see a metal vent, mine was covered in dust and you can see the pic here: https://picasaweb.google.com/115609...
Clean using the method above with the brush and damp cloth then use the air compressor. Afterwards turn the computer 180 degrees again, flip the fan back to the left, put in the screws, and put together the computer.