i removed the built-in monitor of the laptop because its broken. i connected it to an external monitor with VGA cable and im able to use it. after a few months it went BSOD i didnt see the error because it shutted down immediately. i cant see the BIOS eventhough it is connected to an external monitor. what i did is i extracted its HDD then plugged it in into another laptop and it prompted, “there are no boot device available”. if it has no OS, can i use the laptop to install a new OS? and transfer it back to my HP laptop?