cleaning the fan for fujitsu A6220 laptop

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my fan been making these weird noises so I want to unscrew the laptop to clean the fan. (the little filter part that let us take off to clean, doesnt work at all, it doesnt really let me clean the actual fan). So anyways i unscrewed every nail, but cant seem to take the "cover" off. I already see a lot of dust inside, so i really need to take it off to clean it. Does anyone here have a A6220 fujitsu that can help me?

thanks in advance

[Pugsly]

The problem about "cleaning the fan" has already been solved on our forums. So, I suggest you to have a look at the following threads to get your solution:

1. cleaning CPU fan
2. Manually cleaning the inside of a computer

[Una]

You need to take the cpu cooler off from the system. After it is been done get an ear bud and get all the dust off you can. Use the pump to clean the dust after it is been done add some thermal paste to the heat sink.

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first of all thanks for the replies
but i know how to clean it, the problem is i cant get it out, I unscrewed all the nails including the ones under the battery and stuff, but i cant get the cover off, I can lift it up a tiny bit but it seem like something is stuck. so i was wondering if there is anyone here who have a A6220 and know how to unscrew it, if not I will have to phone them tomorrow