My bedroom is on the third floor of my house and I am the only one who stays up there. The stairs to my room are inside the computer room. I always got a creepy feeling walking up the steps as if someone was following me. Well one night as I was going to bed, I turned off the computer room lights and began to walk upstairs as usual. Half way upstairs, I noticed there was a flashing light and strange noises coming from behind me in the computer room. I freaked out and ran back down the steps and turned on the lights. I looked around the room and I didn't see anyone or anything. The computer was off, everyone else was asleep by then and there was nothing in the room that could have done all that. I still don't know what it was but I always keep on the computer room lights, run up the steps and close the door behind me!!