GeForce 560 Ti Graphics Card Issues

I have a GeForce 560 Ti and every so often my screen turns purple, freezes, makes weird noises, then usually goes back to normal. But it just happened during a round of League of Legends and then it wouldn't stop and then my computer stopped recieving a signal. It has happened while Youtube'ing, searching the web, and mid game, so I'm not sure what causes it. Also, when installing it, the pin that you need to push to take it out, broke. I looked online but most people only had issues with Youtube and I would like to see if its a software issue before I need to open it up. Thanks in Advance.

Sounds like it's overheating, but it could be power supply, too. You can check the temps with this, for example. Maybe the cooler isn't set properly, but if it's still under warranty you shouldn't touch it, just send it back. IF it's not the PSU.

This happend to me too awhile back and i found out it was a driver update from the nvidia forums, so i rolledback and it stopped.

(Edit) Bear in mind this was before the latest update, so im not sure if it was fixed.