Depending what you are actually trying to accomplish, a wireless keyboard can so that.
If my computer (NOTEBOOK) is off and I like to turn it on without touching my computer from my bed, is there a remote that has power ON button to turn the computer's power on or to wake it up from a sleep or from hybernation?
Once the computer is on, it is easy to shut down from a wireless keyboard. However to turn it on, you have to phisically get up and push he computer's power button.
Please let me know and guide me if there is such a thing.