Probably been covered a thousand times, but head unit just displaying range rover with power button flashing,checked for water ingress bone dry both sides but boot floor has a bit of water ingress I'll tackle that soon.
Would I be right in saying try a hard reset neg/pos battery cables together or if that doesn't work check the bluetooth module, 2010 4.4tdv8 model year 2011 , cheers

This may just be a coincidence, but after my car had sat unused for three months, mine did the same, I could not find any water in the car, but the car was slightly 'damp' inside. Used a heater to warm up the car for a few hours and bingo, back to normal. As the car 'dried out' the screen went from frozen, to intermittent, then back to normal. I have now put bags of desiccant in several areas including the enclosed electrical sections.

If this does not fix it, you are on the right path with the module.

Thought i was just wanted a second opinion,i may nic the mrs hairdryer and try that first lol, thanks for the reply