I have a early 2011 13mbp (ML) with dual HDD (m4 in original bay and another HDD in optical bay). I was playing Sixtyforce(n64 emu) and it crashed so I had to force restart it. Wen it restarts, just white screen. I tried press option when I force restart but nothing happens. Tried several more times and there's a question mark on a folder. Did some google-ing and it says my Mac can't find the proper software to boot. Pulled out the ssd and place it in an enclosure to try it on another Mac. Opened disk utilises but it doesn't see the ssd. Place the ssd back to my Mac then tried command r (Internet recovery) then tried disk manager, it sees the ssd but the verity and repaid button is grey out. Tried TM restore but it sees nothing even though it backup. Check my wife's TM and it sees the Lion backup. Tried install new os but it says something like it couldn't be installed. Please restart the application. I'm out of option!