I am not sure why this keeps happening. Either plugged in or off it cuts off. If I leave a video playing on youtube it seems to be able to handle that, if that is left by itself. But if I say type into faceboook, youtube, stackexchange into the search bar fast it cuts off. It's as if I am over-exciting it or something and then it turns off. Here is the panic report that keeps appearing? any ideas? THANKS!
Yes the GPU panics are almost certainly due to a defective discrete GPU card. I have the same 2010 MBP and have noticed 10.9.3 has increased the frequency of these fatal crashes significantly.
I'm using the https://gfx.io utility to turn off this discrete card whenever possible but many apps force it on.
P.S. Here is the link from the replacement program, but it had ended: https://support.apple.com/en-us/HT203554