Hi All, I have a MacBook Pro, a few years old now and a thunderbolt monitor, all of a sudden the monitor went black and the MBP became unresponsive causing me to hold the power button down to turn it off... I have unplugged everything, tried a SMC reset etc and this is how it behaves now... 1. Tap the on button 2. Power light comes on 3. Chimes 4. Apple logo appears 5. Power light turns off 6. Spinning icon appears for a while 7. Logo and icon disappear leaving a white/grey blank screen. If I boot in Safe mode the screen eventually turns blue and stays that way. Funny thing is, if I close the lid the power light turns on along with the back lit apple logo on the lid - doing the opposite to how it should behave. Any help would be appreciated! Thanks ---------- It was suggested to try entering recovery mode - this just results with a blue screen.