I have a Lenovo G50-45, it was working normally, but after it doed, I plugged it in and tried to turn it on, and I hear the hard drive starting but the screen is grey. I try to start up bios, but it does nothing. I can still use f9 to black put the screen, and caps lock lights up. The charging light is on when unplugged, but now when the battery 9s removed and plugged in. I wanted to get some response, so I tried to sign in and trigger sticky keys, and when doing so, it made a loud fast beeping noise. I am clueless to what it is. Any suggestions?