Need some advice here. Recorder was left in standby mode to record something during the day on timer. Home from work and noticed that the screen had "Welcome" on it. No amount of pushing on/off switch gets rid of it. Held down for 10s and did switch off and immediately came back on again with "Welcome" and no actions are possible, including remote. Pulled the mains switch out the back so that there is no power supply (hoping it would reset) and have left for 24 hours. Turned on and back to "Welcome". Its almost like its frozen. Any self help would be appreciated.