Help SF2 Black Screen And Nothing Else


It was working fine for a couple of months, then suddenly as I tried to launch an app the screen went pixellated red and rebooted.

Now when i try and turn the blighter on it pulses, the red LED stays solid but there is nothing else just a black screen. It doesn't even get as far as the green logo.......

This is a stock phone with no custom recovery or rom installed.

Is there anything I can do or should I just use it as a paperweight?