The advice in the forum re removing hardware from the Q10 works as described, but only if I have an item attached to the USB ports. It does not work with an HDD inserted in the built in HDD cradle. I also have a B900 and that works swiftly by asking you to wait whilst it removes a USB or HDD drive. All I have to do is press the power off button and the auto process kicks in. I only bought the Q10 for 4K playback as the B900 still works fine. The B900 also plays back subtitles whereas the Q10 still doesn't unless I install VLC Player.
Any advice gratefully received. Thank you.