My Macbook has recently started ignoring the inbuilt keyboard and touchpad. The only way I can solve this is removing battery, wires etc and holding down the power button for 5 seconds. Other evidence that the problem lies in the PMU/NVRAM is that without this procedure, startup and shutdown take an age - especially on windows Any ideas before I just wipe/reinstall? Thanks PS. Yes I have repeatedly zapped the PRAM - there is definitely no PRAM-zapping left to do.