Help with a phone which shows nothing but the boot screen

I have an Android phone that isn't starting up. All it shows when I power it on is the boot up screen. The recovery mode does not start and the ADB shell on my laptop fails to detect the device as well. What can I possibly do to get my device running again. I don't mind formatting the phone. The device is a Karbonn Titanium S1. Any help would be greatly appreciated. Updated: - The adb devices command detects the device as long as it is switched off and connected to the PC via USB. - adb shell -> recovery --wipe_data gives a segmentation fault '139' error. - Trying to boot the phone at times ends up in a screen that says: > **Encryption unsuccessful** > > Encryption was interrupted and can't complete. As a result, the data > on your tablet is no longer accessible. > > To resume using your tablet, you must perform a factory reset. When > you set up your tablet after the reset, you'll have an opportunity to > restore any data that was backed up to your Google Account. - The phone does not boot into recovery mode the manual way but does enter a frozen recovery mode when I run the adb reboot recovery command with an "data mounted failed" error.