|Click the Windows Orb (Start), type POWERCFG.CPL ,1 (the capitals are for clarity only, note the space) and press Enter.|
Expand ‘Power buttons and lid’. Alongside ‘Power button action’, click the blue wording drop down menu (2 of them for laptops) and select Shut Down. Repeat the changes for ‘Start menu power button’, then Apply > OK. In future, to shut down just click the Windows Orb (Start) then the power (red) button.
Any changes that you make can be reversed by clicking ‘Restore plan defaults‘. The changes are for the plan currently in use but it can be set on all plans in the event of you changing to a different one.