I bought a used MacBook Pro 15″ with Lion and Windows dual boot. I accidentally dropped my Mac when it was on - everything was fine until I rebooted it and it got stuck on the grey screen, and I lost the dual boot so even Windows wouldn't start.
I've searched on the web, and it tells me to restore it via the internet with ⌘ cmd+R.
I did it, but it asked me to update to Mountain Lion, so when I hit ok it says that my Apple ID has not been used to purchase Mountain Lion.
What can I do to purchase a new copy of Mountain Lion with my Apple ID? Can I use my other PC to purchase it with my ID, and after that download it when am in recovery?