A:AnswerI have not tried it but I believe the only issue might be keeping it cool enough. As far as I know, the disk drive should work in either position.
A:AnswerYou could certainly get a model which already has a GPU preinstalled which will also have the increased PSU for likely less than purchasing everything separately and adding it into this computer.
A:AnswerThis is not typical. Are you sure the computer is turning off and not entering a hibernating state? Could you try holding the power button for 30 seconds and then seeing if it will turn on afterwards. If that does not work I recommend reaching out to HP support or Best Buy Geek Squad to assist with troubleshooting.
