my insignia 11.6" tablet did not have a reset button or pin hole, but what worked for me is holding down the power button for 30 sec. then releasing it and wait 2 min. then repeat the process over again. I was told to do this 3 times but it actually restarted on the second time. I was really worried as well cause it was fine last night the nothing I did would work. the person who told me to try the trick above. said that if the tablet gets hot it will shut down to protect its self. and not power back on til cooled. however my tablet was 2 days old and I'm sure it was not hot. but it still fixed it so who knows...hope this helps!