Could you please let us know how did you try to disable the power limit, what is the operating System you currently have installed on your computer?
Additionally, you could try making sure after setting the Power limit you use "-i" option in order to make sure your changes took effect.
I perform these experiments on a Lenovo laptop with Intel i3-5010U and the machine has got ubuntu linux installed on it. I used the power governor tool to modify the power limit settings for the processor. By default, 15W power limit is enforced on the chip. I tried the following:
1) I tried disabling the power limit altogether using the governor tool. But when I read the power limit settings again, the power limit stays enabled.
2) I tried increasing this limit to 25W using power governor tool. Re-reading the power limit setting showed tat 25W was set as the limit. But when I ran some workloads, I could observe the processor power being throttled to 15 W after 20 seconds.