I mean..My laptop does crazy things like that because it can't handle all the games I have. Maybe you need to limit yourself to 2 or 3 games? I deleted all my junk from my laptop and it works perfectly fine. I only have roblox and minecraft as my games.. Try not to open too many tabs, or else it will lag, leading it to shutdown. And with the internet..hmm. Just make sure that you have good internet connection, I guess. My answer might not be helpful, but at least you know people are here for you.
Another way is to go to Best Buy or the Apple store and tell them your problem.
There's always an answer to your problem. Ask for help in the real world. I guarantee you'll get your computer/laptop fixed! Windows 8 isn't a really great laptop to use for games..You could either get a new one, but I don't know.
