That could certainly be possible, you could try stress testing it and removing it to see if the stress testing finds problems (and if it doesn't a removal confirms if it really was the cause).
Could it be that the other one is failing right now due to that strike?
Run Furmark to test your GPU. Furmark tutorial
Run Furmark for around 30 minutes
Your GPU temperatures will rise quickly while Furmark is running. Keep a keen eye on them and abort the test if temperatures rise too high