So basically, I got this Mac desktop computer for free. It was in a e-waste pile at my work and I just swapped it up because it is like a $2k computer. I went on it and it goes straight to this Mac OS Utilities Screen and I can't redownload the newest Mac OS because whenever I try it, it says that this item is temporarily unavailable. Is there any routes I can take to where I can re-install the hardware back onto the computer?