I've had a desktop pc lying around unused for around a year and decided to upgrade it, admittedly without really knowing what i'm doing. The original was - click here - this exact model.
I upgraded to an nVidia GTX970, a corsair 600w PSU and bought a 500gb Samsung 850 EVO SSD. I also bought a new copy of Windows 10.
Everything is fine inside the case and as far as I can tell it's all connected right. However when I turn on the machine with the boot DVD inside, it starts to run the Windows 10 loading screen but then after around 3-4 minutes just powers off.
If I go to the setup (f2 on startup) it can stay active forever without powering down. I don't know enough about computers to know where the issue lies.