The first step to getting to the bottom of laptop power problems is looking at the various components that power a laptop. Let’s tackle the AC adapter first.
If you have been a laptop user for a number of years, you already know how annoying and bothersome it is when your machine goes dead due to laptop adapter problems. In most cases, laptop adapter problems become apparent when plugging in the laptop does not cause it to come to life as normal. The first step in determining the reason for your laptop adapter problems is looking at the status LED. If you don’t see any light at all, see if the cord has simply worked loose from the transformer and the outlet. If everything appears to be in order, you likely have a defective adapter.
Solving your laptop display problems is actually simpler than it would initially seem, although you will of course need to have a clear idea of what you are looking for.