I have some stability problems with two of my "leftovers" nvidia rigs.
One of them are powering down the whole system after mining for a couple of hours and the other one is ccminer just crashing on randomly.
I have identical hardware in all my the rigs (NVIDIA/AMD), mobos, cpu, ram, risers and psus.
In one rig i have one EVGA FTW 750Ti and the other rig i have one EVGA SC 750Ti + Gigabyte Windforce 750Ti.
The one powering down is the rig with two cards.
At the same time i have two rigs running five 750Ti:s each at 36Mhs Quark totally stable for weeks.
This is really annoying because they are also crashing with stock settings on the gpu:s. Temps are really low also so i dont get this.
All systems have fresh Win 8.1 installations.
I am running the 355.60 Driver on all rigs and i am using the 61 build due to best performance for me with that one.
Anyone have a clue what could be the problem ?
Can i find logs from ccminer somewhere ?
Also having massive rejected speed at NiceHash from time to time:

