I use the laptop everything was ok before then suddenly it start beeping and all kind off window opens up by it self and I could not do anything just hard boot to stop the noise. Sometimes comes back normal for a while after restart, but after a while it goes back to same beeping and opening windows again. At that time nothing works, no mouse or keyboard. I have to shot it off with the main power button. I have seen this on the keyboard with a spills off a liquid, but in my case there was no spillage done. I even tried another keyboard which I know is good with the same result. I think it must be a short somewhere on the motherboard or a chip is giving up.