I never liked pulling apart laptop especially if you have to pull the keyboard and or the dam screen I always seem t o tear the ribbon or almost tear the ribbon, but I have done it more then a few times only messed up one but 300 that to me is over the top and like what is said just replacing fan for probably could do it yourself and of course the paste . The other reason I have issues is my hand apparently are large and not made for small things lol