When you enable accelerated coolers

Hi all.The problem for me.Played BF, all of a sudden the screen went out and the coolers quickly began to spin.When you turn on the computer immediately begins to twist the cooler without stopping, and the screen is black.The graphics card is GTX760, nothing broke up play in this mode for several years.PSU OCZ 700W.If you use the built-in video card everything works.I realized Prots RAM PSU normal?If you turn the card wirelessly from the PSU coolers are spinning in normal mode and shows the inscription - connect the power cables.If someone can help.