Voila! it worked, DroidCam Commenced working. One day, when I launched Bluestacks & killed 'adb.exe' in Task Manager, unintentionally, just trying. From the Official Website I came to know that DroidCam uses ADB (Android Debug Bridge). So the solution was found by assuming that DroidCam PC Client was faulty. So the problem was that The DroidCam PC Client wasn't even able to reach/Contact my Android Device. There were even more complications, DroidCam, under the same conditions used to work for me earlier, but suddenly stops doing it now! So I Re-installed everything, The PC Client, The DroidCam app, the Drivers! Oh! I even tried different version for drivers, but still no clue. Now, the above mentioned error cannot be just from a single source, there could be many reasons behind it.
I don't know the proper reason behind the error, but yeah! there's a solution. For USB Connection, you must have device drivers installed.
