after it enters post (the above screen) what does it do? does it go to a black screen? does it freeze/ appear to be stuck on loading windows? does it keep restarting?
could be a failed hdd (seems like your pc isnt recognizing it for what ever reason)
first things first, unplug laptop and remove battery, then hold power switch down for 30-60s. Also reset bios to default settings if you can get into it.