suddenly

Hello. For the past week my laptop has turned off three times randomly without me doing anything to trigger it. Whenever it went to sleep / shut down it would play a sound kind of similar to the windows 10 notification sound and after opening it the same apps would be there as if nothing...

Youtube suddenly doesn't load pages fast in hd? EXTREMELY slow after a few seconds. Constant buffering and totally unwatchable. Not sure what happened. Is anyone familiar with this problem? It was working fast a day or two ago. Thanks...