If the wall outlet is faulty, it will prevent the electricity from flowing to the computer. To find out if the wall outlet is faulty, you can plug in another electrical device to decide if it is working nicely. If the electrical device did operate as it should, will need to replace it with fresh new outlet. It is advisable that work with a technician to be able to the wall plug if near someone skill in DIY project.
At this point remove the cord make the small cable tie on the section of your cord where marked, pull Pv cable tie tight the program will not slide up or down cord. You may have to use needle nose or other pliers certainly it is tight and will not move. When you are sure the tie wrap is secure and won't move it is possible to clip or cut the unused a member of the cable connection. Insert the cord back into the clip.
Start by turning the machine and disconnecting all cables except the Power pv cable power cord.