Hi everyone! I'm new posting here but have looked in several times and seem to always find answers! so thought I should join and share your knowledge! Right! I am new to using a tablet and by accident (on one of the home screens) I accidently clicked on what looked like a brightness (sun icon) button on a strip of three buttons one was deffo for wifi anyway the screen went off and I don't know how to get it back on again! can you help? I turned the tablet off then on again and it's booting up OK but then just a black screen! HELP please! I feel I've clicked on something I shouldn't have!