My computer had problems so I took it to a shop and they said my motherboard and psu were failing. They built me a "new" one that worked fine one everything but games.
When I turned a game on the psu started arcing and occasionally the system shut off. I got it replaced at the shop under warranty, but the new one does it too.
The build is 16G ram, gtx 970, AMD Phenom X6 1065T, a gigabyte motherboard, and a 600W thermaltake. It's frustrating to have spent so much money on outdated parts that don't even work properly.