We are sorry to hear about this. When was the television installed? What devices are connected to it?
Please go to Settings > Support > Software Update, and then select Update Now.to see if there is a software release for this model.
Please go to Settings > General > External Device Manager, select Anynet+ and disable it.
I am having the same issue. About once a month my Ru7100 turns itself on, usually in the middle of the night. It opens the web browser of the TV. Anynet+ is disabled and the firmware is up to date.