As ko888 showed, the V750 will be more than enough
It's a very high quality, unit, and you may even be able to do dual card configurations with it in the future.
There is a chance that when a power supply fails, it fries other components with it. That only happens with very extremely cheap units, and it often actually burns something, but it is still possible there was some damage for the rest of your components.
In the future, make sure to double check that your power supply is good quality. It is often underestimated because people don't understand it, but it is the only component that can literally fry your entire computer, so you should make sure it is good.