Repeat lockups, freezes and reboots. 3 Mobos, 2 CPUs, 2 GPUs, 2 PSUs...

Phantaztix

Honorable
Jan 9, 2014
2
0
10,510
OK, so I'm about to drop kick my homebuilt PC. I've gone through a lot of hardware and tests and nothing helps.

Current:
ASRock Z77 Extreme 4
i7-3770K (stock speeds)
16GB Corsair Dominator GT 2133
MSI GTX 660ti PE
Kingston HyperX 3K 240GB (primary)
Corsair Performance 3 120GB (secondary)
2 HDD storage only
Corsair CX750M 750 watt PSU
Cooler Master HAF 932 Full Tower
Windows 7 Home Premium 64-bit
Logitech G710+ Keyboard
Logitech G9 Mouse
Logitech G930 headset (USB transceiver)

I'll be playing a game such as COD or just browsing the web, or watching Netflix, or running Excel, it doesn't really matter, but the computer will randomly freeze and if I’m not around it will eventually restart, but if I’m around I’ll have to hit the reset button.

Sometimes it fails to load into Windows before something freezes and I’ll come to the PC with it sitting on the Startup Repair, which I don’t do because it loads right into Windows just fine.

Now here’s some history:

This started with my first Motherboard and CPU on this build:
MSI Z77A-GD55
i5-3570K
Diamond Radeon HD5870
Corsair Performance 3 120GB (primary)
WD Blue 500GB HDD (secondary)
Cooler Master 630 watt PSU
-Everything else the same

It started freezing and I ran as many diagnostics as I could. My best guess was a bad motherboard. I RMA’d the board to MSI, which they replaced without question, yet never told me what this issue, if any, was.

Within a week it started freezing as well. I thought it couldn’t be the board again, so I upgraded my GPU since I wanted a new one anyway, thinking maybe the old card was freezing up.

It kept freezing. So, I bought the ASRock Z77 Extreme 4 and kept the MSI board just in case. This is also when I upgraded to the Kingston HyperX 3K 240GB as the primary, and pushed the 120GB to a secondary (only to hold games and documents).

Again… Freezing.
Keep in mind I’ve run all kinds of tests, and found nothing.

So, next upgrade to the i7-3770K. Fry’s had it on sale for $222, so I bit the bullet. Still freezing.

*sigh* So I try the PSU. Nice Corsair, cleaned up the case’s look some. Still freezes.

I’m lost.

I’ve reinstalled Windows 3 times.
I’ve run Memtest86+ for 6 straight passes (at the longest time).
I’ve run Windows Memory Diagnostics.
I’ve pulled the memory and ran all tests with just one stick at a time.
I’ve stress tested the SSD, CPU, GPU and they all seem to pass individual tests.
Intel Burn Test kills it in about 60 seconds at only 57C.

The only issue I’ve discovered, and unfortunately it wasn’t until I installed the i7, is that when I run Prime 95 with all the memory installed, it’s almost guaranteed to freeze. But with one or all sticks, when it runs, Worker 1 gets the message:

“Possible hardware errors have occurred during the test! 1 ROUNDOFF >0.4.
Confidence in final result is fair.”

This always happens during each pass of Worker 1.

I can’t decide if that’s “normal” or not by searching the web.

I am not Overclocking at all, I have not adjusted anything in the bios except to turn on the XMP profile so it uses the memory at 2133 (I’m assuming, since CPU-Z reports 1067MHz under the XMP-2134 column).

When I had the i5, I had tried stock speeds, OC’d to 4.2GHz and Underclocked to 2.8 on all 3 mobos. Nothing solved the issue there.

I’ve run Kingston’s Toolbox and read the report and SMART has no recorded errors and 100% life remaining. It DOES however record the 321 power failures (from having to hard-restart).

I’ve spent so much money and time on this rig, not all wasted with the new parts, since I am recycling the old parts to a new desktop for my SO. But I just don’t know what to do or what else could be causing this. Sometimes I get a full day in and no issues, and sometimes it freezes 10 times in 20 minutes and I give up and go do something else.

Any help is appreciated. I’ve run other diagnostics and just can’t remember this right this moment, but would gladly try anything.
 
Solution
Two suggestions:

(1) I suspect the RAM - not that it's broken, but that the XMP profiles are on the edge of stability, and you have other stuff that is not particularly tuned, which might make demands on the power stability (see point 2, below). Perhaps run the RAM slower, just to see if the problem goes away. Then you can work back upwards.

(2) Another suggestion is to try setting voltages to safe and fixed levels, without overclocking, rather than relying on the motherboard to dynamically change things. Again, once you have stability, you can aim at getting performance back, knowing you have a safe fallback.
I've only got one bit of input here, your symptoms are similar to an issue I had not too long ago, took me over two months to trace the issue to a failing mouse. I'll suggest trying a different mouse and keyboard and making sure no other USB devices are plugged in, see if the issue persists.
That's all I got here
 

Phantaztix

Honorable
Jan 9, 2014
2
0
10,510


Really, a mouse? I'll try anything! I think I have a couple spares around here somewhere. Thanks, I'll let you know if it helps.
 

j5v

Honorable
Feb 14, 2014
12
0
10,520
Two suggestions:

(1) I suspect the RAM - not that it's broken, but that the XMP profiles are on the edge of stability, and you have other stuff that is not particularly tuned, which might make demands on the power stability (see point 2, below). Perhaps run the RAM slower, just to see if the problem goes away. Then you can work back upwards.

(2) Another suggestion is to try setting voltages to safe and fixed levels, without overclocking, rather than relying on the motherboard to dynamically change things. Again, once you have stability, you can aim at getting performance back, knowing you have a safe fallback.
 
Solution