Here is another sad story of the left hinge broken on my HP Envy DV7 notebook. The place on the base where the hinge is screwed in is now just a broken piece of plastic. I paid top dollar for this and cannot justify replacing it so soon out of warranty. I also am not confident that any repair would last. What a quandary. Please help!!!
HP support saw this post and was very helpful with my repair. They confirmed that I needed spare hinges and base (parts 707999-001 and 681977-001). Unfortunately these parts are no longer available from HP but I found them on Amazon. The base took a few weeks to come from China. They also shared these links for my unit's repairs.