No signal after playing games for 5 min

Hello there Im resently having a problem with my games. It happens for all my games really.

I start up the game and after about 5 monutes or so my tv cuts and says No Signal.

Can anyone help?

Please and thank you.

I5 4590

MSI B85-G41

Radeon Hd 7750

Toshiba 22in.