Black screen / Crash During gaming NEW Computer

VinceAu

Honorable
Oct 3, 2013
2
0
10,510
Hey everyone,
i have recently purchased a new gaming rig and i have already been experiencing black screens and crashes during gaming. I have had crashes mostly playing, League of Legends, Battlefield 3 and Final Fantasy XIV. Which mostly just consists of my screen randomly turning black and eventually a long repeating sound or it just goes black forcing me to have to reset it manually with the button.

Here is my build:

Windows 7 Home Premium 64-bit
Intel Core i5-3570k CPU @ 3.40ghz
8.0gb G. Skill DDR3 1600mhz
Antec HCG-750 750W
Asus SABERTOOTH Z77 Motherboard
Crucial SSD 128G
Sapphire HD7870 OC 2G
Thermaltake VN700M1W2N Overseer ( Case )
Intel BXRTS2011LC ( Liquid Cooling )

I have checked drivers and updated bios, chipset etc.
Checked temperatures during games, all seem fine.
Crashes only seem to happen very randomly and sometimes spaced out a long time.

Any help would be much appreciated, thanks in advance Vince.

UPDATE:
Searching for solution through forums i have done a few tests that were suggested here are the results,

Prime95 - Ran 12 hours of both large and small, No errors
Memtest86 - Ran the test from disc, No errors
Furmark - Ran 15 minute burn in at 1920x1024, recorded 35128 frames, 38 FPS, 66c. Fan speed reached 44% without any forcing with outside program.
 
in the bios make sure the sabertooth running in standard mode.in performance mode it can change the ram to cpu bus speed and cause errors.
in the ai tab in advnace mode make sure the ram set to xmp profile.
use msi afterburner to make sure the gpu fan spining up to speed when the card is getting hot. if the rig still crashing try another power supply to run out a weak unit.
 

VinceAu

Honorable
Oct 3, 2013
2
0
10,510
I checked the bios and it was already running in standard mode. I also went into advanced options and the ram setting was XMP aswell. Im downloading msi afterburner now, How exactly do i check that?