I surrendered and installed a Sapphire AMD R7 260x graphics card in my noble one-year-old i-5 3570 desktop to improve my video for Netflix movies. Now the computer ***shuts down*** by itself suddenly after an hour or so. I removed and reinstalled (from another server) the graphics card's driver, but the machine still shuts down automatically in mid-movie. Is overheating the issue? My case has two fans; the CPU has a big Cooler Master tower with a fan. But iunfortunately I must mount my graphics card in a PCI slot right alongside my 560 watt supply. As it turns out the GPU's fan blows directly on top of the PSU only a half inch away. Is it overheating the PSU? Or is the GPU overheating because air circulation is compromised? The PSU is a relatively expensive Seasonic with a Gold rating. I have an Asus mother board P8 Z77-M Pro and use an OCZ SSD. Anybody know what's happening?