My screen is flashing pink while playing games

[Zen3515]

My screen is flashing pink while playing every game.
I have SLI configuration with MSI GTX 760 TwinFroz and MSI GTX 760 Ref. both of them running on my computer almost 3 years(2.5 years) now without any problem.
But recently I got rainbow effect in some object in Overwatch in some match. I think it was SLI scaling problem, but today I played Overwatch as usual after 5 minute my screen started flashing pink color. I exit the game and perform clean driver install. It seem like problem solved. after a while of playing I get this flashing again.
I disable SLI(Use MSI GTX 760 TwinFroz only) and it fixed this promlem too.
Is my GPU(MSI GTX 760 Ref.) is causing this problem? Can I RMA it?

 

[Hellfire13]

u seem to have pretty much found out ur own fix...if its in warranty, rma it immediately...

 

[Zen3515]

I don't know which card is broken.
I tested 1 card at time but nothing happen no flashing.
I use 2 card again, even temp reach 85°c still no problem.

What happen?
Did my card broken?
Does anyone has the way to test this problem? Also my warranty will be expried this month, I need to RMA it ASAP. Please help.

 

[Hellfire13]

use Futuremark and Unigine Heaven/Valley both to stress test each card separately first and then in SLI...see wat it throws...if they all pass without a hitch in both the tests, then ur issue might lie either in the sli configuration or some other hardware, which might have started bottlenecking...