ive recently restarted my Mac which I don't do very often but it was becoming slow and some items would t remove from trash. Since then it has failed to work correctly. It will make the bong noise and a load bar will reach 20% before shutting down. Recovery won't work. Pressing D after restart brings up languages but then it shuts down. I closed it and it randomly restarted and showed the account user log in screen,before shutting down again. I spoke to Apple who said I need to get service. Which is of course 3 hours away and 6 days before next appointment. I don't have a USB with me to try and reinstall but based on the above,does it sound like hardware related issues?