Most laptops & ultrabooks have the minimal settings in BIOS (Boot order and the likes) and dont let you have fun customizing anything about the CPU
Is there any program to allow me to change CPU options directly from windows ? C-states, turbo, frequencies....
No.
Also don't mess settings you don't understand.
That said there might be an "unlocked" BIOS for your model. Be aware that if it's not actually compatible or if something goes wrong during flashing it will brick the laptop.
ok
i just wanted to stop my laptop from changing frequencies all the time (i think thats called C-states)
ive used throttlestop before to change my cpu frequency down a bit when turboed up and it has worked, also intel XTU worked for me similarly. not sure of the effects of these programs long term but ive had no issues using them.
if you want your cpu to stay at top performance just set the power plan to high performance in power options
That is called speedstep.
There are very good reasons why your CPU is changing frequencies and if you don't understand them then you should probably not look for ways to disable that behaviour.