how to clean 5920G completely from dust

i have this problem that when i have the back cover off i cant get to the heatsink completely.. there isnt so much dust there.. look at the pic in the red squares im pretty sure there is a lot of dust but i cant get to it??? HOW?

 

Just buy a can of air duster, unless you want to take out the entire heatsink/fan assembly.

 

are you sure this will remove all the dust? i dont want to take it out just clean it... but is that enough to clean it? i need remove all the dust, im overclocking it as hell and i need to have all the airflow i need. i have overclocked the 8600M GS that have 650/420 clocks and default 450/400. i also have a cheap cooling pad. i get 80 degrees max when playing call of duty 4....

one more question... what is the best core - to -memory ratio? i think i have pretty much core but very less memory

EDIT: Its 500 memory not 420

 

Do you realize that the Nvidia 8600m is one of the models that has a solder fault and thermal cycles is what kills it, so you take a big change by overclocking it.

Some manufactures offer a 2 year warranty on the 8600m and 8400m faulty gpu problem.

So i would not overclock it, some people actualy underclock to make it live longer.

 

i dont care... it seems stable and the comp is old and i have 5 year warranty

 

If you still want to remove the heat-sink, you have to do this - there are 4 screws in the battery compartment (excluding the ones on the heat-sink itself), 3 in a line from the outer side and one near the CPU's heat-sink, unscrew it. Then lift the battery compartment in order to make enough room and then lift and pull the heat-sink. That's it And that's the easy way, the hard one is to disassemble half of the laptop

 

ok thanks! shall do the air can first. if that doesnt get the job done i do the way "triturbo" said