My CPU fan kept on having problems such as stop spinning and getting clogged, also now its making rattling noises and spinning at 170 RPM. the first time i took it to the Acer Service Center the guy said it was just dust clogging it. Now its happening again, but i dont understand how its only the CPU fan thats getting clogged by dust. i mean, by the looks of it, the GPU fan also has the same amount of dust covering it, and its spinning just fine at max 6122 RPM. Now i dont know what to do with the CPU Fan. Its not clogged tho its just making rattling noises and not spinning at full speed. i tried poking it with a needle but still, its just rattling like RATTATA RATATAT RATATA RATATA and spinning at 170 RPM. i think theres something wrong with it, should i change the fan or just spray it with compressed air with the hopes of getting the thing thats making it rattling to get out of there