Help - Crashing problems with new GTX 1080

[ChrisJ_SLH]

Hi,
Just bought and installed a Palit GeForce GTX 1080 Super Jetstream in my system to replace a GTX960

I removed the old drivers (same version) with DDU as recommended and did a fresh install.

The issue I have is that the card seems to work fine on the windows desktop but when I run games the PC reboots as soon as the card gets under any load. (I haven't changed the settings on any of games yet from my old card).

Everything is at stock settings.

System is:
- Windows 10
- I5-2500K at stock3.3Ghz
- 16GB Ram
- Asus Z77 Sabertooth Motherboard
- Dell P2715Q 4K
- Coolermaster 850W PSU

Any help or suggestions greatly appreciated.

Thanks.

 

[ChrisJ_SLH]

Thanks guys, I checked my MB bios version and it was a few versions away from the latest. I've updated it to the latest but that was still dated September 2013.

Before I did this, I tried a couple of other games and benchmarks. Some older Lego games were fine at 4K and max settings. Also, Heaven Benchmark and FurMark ran fine.

However, GTA V and Lego Force Awakens still bomb out and cause the PC to reboot.

After the Bios upgrade, the bios is giving me a message after a crash that a power surge was detected and the system was shut down.

Could this be a power supply problem?

 

[ChrisJ_SLH]

Could be psu. Coolermaster have made some awful PSUs in the past. What is the exact model of your current unit?

It's a Coolermaster RS-850-ESBA. A bit of google-fu tells me that " the 3.3V and 5V lines fluctuate quite a bit under load".

I've turned off the under/over protection in the BIOS and Lego Force Awakens now runs. Going to try GTA V in a minutes.

Update: GTA V is running fine at 4K now. I'm a happy man! Now the remaining question is do I just leave the Under/Over Volt protection off with the existing PSU or replace it?

 

[ChrisJ_SLH]

OK guys I hear you, I hear you! lol

New PSU being sourced asap and OV/UV Protection back on....

Thanks for all the help!

 

[ChrisJ_SLH]

New PSU installed (EVGA 750W) and OV/UV protection back on.

Happy to report everything seems rock solid.

Thanks again everyone.

 

[ChrisJ_SLH]

What model evga 750w did you go for?

The SuperNOVA Gold, PN: 220-G2-0750-X3.