Computer keeps hard locking (No BSOD)

[Jasco1997]

3 months ago I upgraded my GTX 970 to 2x GTX 1080 Ti's in SLI and since then it has started hard-locking. Basically whenever I'm playing games, even light-workload games like Blockland, my computer will completely freeze. The pictures on all 3 of my screens freeze, keyboard and mouse do nothing, and in my headseat I'll usually hear some ungodly buzzing sound. It will stay like this forever I hard reset it and will not show a blue screen. In the Windows event viewer there is no sign of an error at all. 

Things I have tried:

Undid my overclock from 4.4ghz to 4.0ghz

Went from SLI 1080 Ti's to single 1080 Ti's

Tried other 1080 Ti

Tried GPU in just the second PCIe slot

Tried other GPU in just second PCIe slot

Disabled my integrated graphics

 

System Specs:

EVGA SuperNOVA 650W P2

Asrock Z170 Extreme4

Intel Core i7 6700K @ 4.00 Ghz (cooled by Coorsair H110i)

SAMSUNG SM951 M.2 2280 128GB boot drive

PNY GTX 1080 Ti blower style

Memory 2x8GB Corsair Vengeance LPX DDR4 2400

 

OS is Windows 10 64bit

Motherboard drivers and firmware are up to date

[PineyCreek]

PSU wattage seems low to run two 1080Ti's at load IMO depending on the rest of your components, but I doubt that's the cause of your problem if you still have an issue after taking one out.  If you ran Linux maybe (off USB) and played a simple game like MineCraft, maybe that could be a test to see if it's OS/driver related.  Could try DDU to uninstall nVidia drivers and do a clean install of those.

[Jasco1997]

5 minutes ago, PineyCreek said:

PSU wattage seems low to run two 1080Ti's at load IMO depending on the rest of your components, but I doubt that's the cause of your problem if you still have an issue after taking one out.  If you ran Linux maybe (off USB) and played a simple game like MineCraft, maybe that could be a test to see if it's OS/driver related.  Could try DDU to uninstall nVidia drivers and do a clean install of those.

I recall plugging my computer into a Kill-A-Watt and seing a power draw of around 500W when using both GPU's. My PSU is only 2 years old and I haven't been pushing it that hard. I think it's either the CPU or motherboard but I'm hoping somebody that's experienced this before can share what they think the cause is.

[PineyCreek]

1 minute ago, Jasco1997 said:

I recall plugging my computer into a Kill-A-Watt and seing a power draw of around 500W when using both GPU's. My PSU is only 2 years old and I haven't been pushing it that hard. I think it's either the CPU or motherboard but I'm hoping somebody that's experienced this before can share what they think the cause is.

Fair enough.  I admit, I don't have two 1080Ti's so I can't test it myself.  I was going off of other reports on sites like tomshardware.com.  Since it's locking such that event viewer won't even log though, I almost want to blame windows.  I had a hard lock issue with my 1080Ti when I used it hard or when it was idle for too long.  The problem started after a Windows OS patch and continued until a more recent OS patch.  Clean installing the drivers did nothing.

[jbuck]

I would like to suggest you download a graphic card monitor utility to see what your fan speeds and temps are.   I think when your gpu temps are high you are

getting freezes..  I had similar issues with a video card some years ago..

[Jasco1997]

Necrobump: I bought an ASUS Prime Z270-A off Ebay for $70 and it appears to have fixed it. Even if the issue persists this motherboard has loads more features and gets through the POST process twice as fast so the crashing will be much more bearable.