What to do if you can not create new power plans
If your Ultrabook only has the Balanced (or HP) power plan, then it almost certainly means that you have a Microsoft Surface, or some similar device from another OEM. The good (and bad) news is that there is a registry hack to enable other power plans – the 3 default then and third-party ones (like Bitsum Highest Performance).
If you Google around, you will find registry hacks to let you restore the ability to create power plans and such; at least temporarily. However, you need to be extremely cautious with these hacks, as the system is designed this way because heat dissipation is otherwise very difficult. So – CAUTION. You might think you want a tweak, but you really don’t!
We have updated ParkControl in the coming days to handle these type systems.
We have found that performance can be improved, but is it detrimental to the device, or can the device run indefinitely at that load? These variables are unknown. Microsoft locked down the power plans for a good reason we think. Therefore a warning is being added and we are opting NOT to allow the creation of new power plans on these systems (they would be deleted anyway later in an OS update):
We have found that performance can be improved, but is it detrimental to the Surface hardware, or can the device run indefinitely at that load? These variables are unknown. Microsoft locked down the power plans on this *particular* hardware for a good reason, thus we recommend NOT using any of the registry tweaks you find on the web.
Note that we have not seen any other device where the power plans are locked down by the OS like this. Have you? If so, let us know below!