From a blog that I love (Obsolete), I find a piece of a diagram to follow for any reparation that may arise with our computers. The history of these diagrams comes from a book called ".Computer Repair with Diagnostic Flowcharts"by Morris Rosenthal. Thanks to him, and his desire to help people, we can enjoy them totally free of charge in his navigable version.
Unfortunately, as we can see, these computer repair diagrams are in English. But don't worry, because here at How to do We are already preparing the translation, and as soon as we have it finished, we will publish it for your enjoyment.