I would see a doctor if it continues, but if you were on the computer too long your hand could have gotten a cramp from holding the mouse. It shouldn't be a bad sign of health risks or anything. But if you feel its necessary you should see your doctor. Hoped you liked your answer. … Read more

Sometimes holding the menu button won't work or the power button. Try waiting until it runs out of battery and then charge it. That worked for me.

I'm not going to venture a guess here as several things come to mind and most aren't good so I'll advise you to see your DR ASAP or if things get worse head for the ER here and this way you can be sure.