Check if the battery icon shows a red cross ... Therefore, before you proceed, create a System Restore Point. One possible cause of this problem is a faulty laptop battery. To confirm this ...

It will be easier to see if your laptop’s battery is full and charging, or about to die and needs to be plugged in.

If you notice the yellow triangle, run the Power Troubleshooter. If the tool can fix the issue, then there is no further explanation as to what is causing the issue, follow a different course of ...