Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
I am not sure that you can actually do this, with a disabled system, but the logical thing to try, is to attempt to either do a System Restore back to before the system was disabled, or otherwise revert the system back to workability.
(I realize this is somewhat basic, as advice goes - I'm also aware that you specifically requested Bhavik. So I apologize if this is disappointing, so far, and assure you that I will either extend my first attempt at an answer with further advice, or I will cede the case again until Bhavik picks it up.)
Right. Can you start Safe Mode, though? that menu (the menu where Safe Mode appears at the top as the top-listed option) has System Restore as an option, sometimes... depending upon (unfortunately) specifically allowing it in your system's configuration, in many cases.
I assure you, you did not waste my time, thanks.
I have Opted Out, in case Bhavik sees this case and soon has a saving suggestion for the problem.
What do you see when you try to restart your PC ? If you do not see anything then their may be an issue with the connection of your monitor. Unplug alll the devices and try plugging them back and then restart it.