My laptop was overheating and shutting down under load. I followed the guide, and the laptop is running cool. I was amazed how much dirt I removed out of the fan alone. I found the guide easy to follow, a couple of points I got stuck and that was more due to me not following the guide as described. One minor suggestion, is to describe the various screws and say remove 4 of type A,B,C etc. So that when you are reversing the instructions it's easier to know what screws go where. If I did something like this again, I'd get one those medicine boxes, and put screws from step 1 in container 1, step 2 in container 2 etc. Overall excellent guide. Thanks.