Hi and welcome to the forum
I would suggest removing the battery for a short period - say half an hour, and replacing it - then turn it on. If it boots up successfully, go to the menu and do a factory reset and see if it then becomes stable.
cheers, TREVOR
The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris
