Default [Q] Sony Xperia Sola phone display blinking

I have a Sony Xperia Sola 2012 model running factory-installed Gingerbread.

Today, its display suddenly went white and then the phone now keeps flashing on (only white) and then goes black over a duration of 10-15 seconds.

I tried connecting via USB to Sony PC Companion, but the device is switched off before it is connected to the computer and then starts over again.

In short, I am stuck. Any way I can recover the device or its data?

Thanks in advance.