Maximus IV extreme-z z68 restarts instantly under load in a loop

[xfullboost]

Hello, this is my first post here. I stumbeled upon this site while searching for a solution to my problem.

Problem #1: Everything shuts off instantly after 10-15minutes of gaming or benchmarking. System reboots then....
Problem #2: Everything shuts off immediatly 5 seconds after the START button is pressed. This can repeat up to 4 times before finally posting and booting windows.

Nothing is overclocked. the only setting I changed was the ram speed to 1866mhz.

I've monitored my temperatures for my CPU and GPU's. Those three temps are well within normal. Under load CPU temp average between all cores is 59c. GPU1 is 80c GPU2 is 70c.

I really cant remember if I breadboarded the motherboard, I think I did but honestly I can't remember.

The last two instances happened after 10minutes of playing Arma 2 and Battlefield 3.

I would like to know if the motherboard could be causing this issue, or if its something else.

This computer was put together in January 2012.

System:
ASUS Maximus Extreme-Z Z68 (optimum default settings)
Intel i7 2700k stock clocked
Corsair Dominator GT 2gb x 4 DDR3 8-9-8-24 1.64v
Sapphire Radeon HD6970 with aftermarket air cooler (in lane 1) bridged crossfire-X
Sapphire Radeon HD6970 with aftermarket air cooler (in lane 4)
OCZ Vertex3 MAXIOPS 120gb
OCZ Vertex3 MAXIOPS 120gb in RAID
Windows 7 Home Premium 64bit
Single custom CPU water cooling loop.
PC Power&Cooling Silencer MK II 950w (89a on single rail)
Xigmatek Elysium case.

So if you have any ideas, anything at all, please leave a reply.


Thanks

[xfullboost]

HiVizMan wrote:
The two incidents are not related. Your NIC was showing as the cause for many of the shut downs. Hence the two days of no problems once you had swapped NIC.

This latest shutdown is to do with thermal load. Basically you were doing two things that required huge amounts of CPU resource. CPU working hard = heat being produced. Your temps as 66 pointed out are not ideal.

Reseat your cooler and see if your temps improve.

alright, I'll reseat the cooler and see what is causing my loop to not cool as well as it should. thanks

[Area_66]

I still would like to know what is your loop setting.. you may not have flush the rad properly and the cpu block is may be clog with rad soldering residues. Or may be air are trap somewhere

[xfullboost]

Area 66 wrote:
I still would like to know what is your loop setting.. you may not have flush the rad properly and the cpu block is may be clog with rad soldering residues. Or may be air are trap somewhere

ah sorry, i read your comment but forgot to answer you in my reply!

I re-ran prime with no OC (what i've been running since istarted this thread) and im at 50, 55, 60, 55 respectively in 15mins. 3.9ghz

I have a single CPU loop.
Pump-MCP-35x @ 12v max rpm.
block- ocz cpu-360
rad- swiftech mcr420qp, only using 3 of the 4 spots have fans on them. coolermaster r4's at 6v-9v most of the time. shroud on the intake. top of the case.
res- xspc dual bay dual pump. using 1/2id tubing