I was trying to install ubuntu Server 14.04, with Ubuntu 14.04 and windows 7 already on my PC. In between the process of installation, I received an error (flash message) and the laptop immediately re-booted. Since then i am stuck with a black screen during boot. I tried running the boot repair option, but didn't get the Recommended Repair link and got only the Bootinfo Summary link.
The above is the diagnostics run by it . Kindly help me out here. Stuck in a really bad place. Couldn't even take a back up of my application documents . Please people help me out.