What to Do If You Can Not Create New Power Plans – Locked Down Windows
Many modern ‘portable’ Windows 10 systems like ultrabooks and tablets have only the Balanced (or some singular) power plan. Creation and editing of power plans by third-party software is restricted on such systems.
There is a registry hack that will restore the ability to fully edit power plans, but only temporarily since the tweak will be reverted by Windows in time. However, you need to be cautious with these hacks. The system is designed this way because (1) the hardware may discharge the battery faster than the AC adapter recharges it, particularly with high GPU loads, and (2) thermal control may be problematic. In either scenario, before a critical point is reached the system will self-throttle, but that obviously isn’t what you want!