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Hello, I'm Tim, and have over 15 years of experience with eBay, Google, and the Department of Defense. I'm here to do the best I can to assist you with your problem. If remote access is needed, I will remote in, and call you, as well as provide a free tune-up. Also, follow-ups are always free if more is needed.
It's possible that you disabled the keyboard.....Let me look at the specs. Are you on the same machine now?
Does not look like there are hot keys for that function, have you tried taking the battery out with the unit unplugged, then putting th battery back in, plugging in and booting? That would clear up an OS error.