Handset suddenly completely unresponsive

[devmus]

Z1 suddenly burned into a brick a few hours ago. Haven't seen any problems in a while before this... 

Still had over 50% battery when the problme occured. Have had it on the charger for a few hours since.

Tried force restart. Nothing when unplugged but will make the phone vibrate (as per normal) when on the charger. However this has no effect in making the phone start up again....   Does anyone have any ideas as to how i could fix this? 

[_alexdon_]

You may need to perform a software repair using PC Companion.The process will erase all internal memory.You might need to charge your device for about 1-2 hours before so the device has at least 60% battery.

Make sure the device is not connected to computer or laptop and turned off (sometimes you have to press power button and volume up until the device vibrates 3 times or on some devices you have to press the small button near the SIM tray or on the back of the device).

Open PC companion->support zone->phone/tablet software update->repair my phone/tablet blue highlighted.Follow the steps given,do not connect your phone until prompted to press volume down while plugging USB cable. If PC companion does not start the repair process, you might need to run it in compatibility mode with Windows 7 (in some cases XP).