Monitor Turns Off Mid Game

Occasionally and randomly when I am playing certain games such as Skyrim or Bf3 my monitor goes black but my pc stays on. There is a loud fan-type sound and the game audio continues for a moment. I then have to restart my computer. This generally happens 15-30 minutes into the game. I have a gtx 560 ti, no overclock, an i5 2500k, 750w power supply, and 8 gb of ram. I have monitored the gpu and the temps don't go above 60-65. This is a brand new computer and any help in fixing it would be apprieciated.

Which model is your PSU?

Can you try ithe PC on another monitor?

Also press 'Start' and typeEVENTVWR in the box at the bottom and see if there are any red error messages.

Have tried>

Also press 'Start' and typeEVENTVWR in the box at the bottom and see if there are any red error messages.

Seems more like either a RAM, power supply or even a hard drive failure...

Make sure the power and data cables on your hdd are seated properly in both the disk and mainboard sockets.

I don't know about the temps inside your case and how your PSU is mounted, but while gaming, check the air which comes out the back of your power supply by simply holding your hand behind the fan. Some power supplies are really sensitive to high temperatures and switch themselves off on occasion (I've had it a few times with my Antec TPQ1200 in my mistake called CM Storm Trooper).

Thanks for the help everyone. Unfortunately, it appears to be a faulty gpu and/or motherboard. I'm sending it back to the company for replacements.