Norton is good, stfu.
Your father is a coal miner who buys into any corporation who claims free antivirus software is horrible because he has no understanding of programming whatsoever.
Malwarebytes and avast! is enough.
I had an error similar to this with a GeForce FX 5500 PCI before, turned out the GPU was fried 3 days later. Letting your video card cool down whenever it does this is crucial.