Game freezing

So, I am having an issue. So far it has happened twice.

When connected on the network, my Wii U just freezes up, and a buzzing sound comes from my tv. Is there a patch or known glitch for this?

I don't wish to gain bad a reputation by just dropping from games nor do I want to hurt my Wii U or my data for monster hunter.

If anyone else is having this issue or has found the reason on why please let me know.