What would cause a miner to become unresponsive?

[Bitminer2017]

Been slowly building up my first miner, and at 4 cards it was fine, now it's up to 7 and it keeps crashing after about 5 minutes of use. It will hard lock up with the screen completely frozen. It's on 2 1000w EVGA power supplies.

If there wasn't enough power on the circuit to power both supplies, wouldn't it just trip the breaker?

Any idea what else could cause this?

It's on the ASRock BTC+ motherboard using mintcell risers with included cables.

[Ruz05]

I got similar issue. The miner would work fine for couple of hours and suddenly go unresponsive. Mining pool would show ... This is hopfully fixed with the next release but the reason can be a undervolted and overclocked gpu.

[Bitminer2017]

I got similar issue. The miner would work fine for couple of hours and suddenly go unresponsive. Mining pool would show ... This is hopfully fixed with the next release but the reason can be a undervolted and overclocked gpu.

Nothing is modified. It's a stock set of GPU's. No ocing at all and no undervolting on purpose.

[xxcsu]

full system spec , detailed system setup would be great , info about what psu powering what cards ....

[leonix007]

Been slowly building up my first miner, and at 4 cards it was fine, now it's up to 7 and it keeps crashing after about 5 minutes of use. It will hard lock up with the screen completely frozen. It's on 2 1000w EVGA power supplies.

If there wasn't enough power on the circuit to power both supplies, wouldn't it just trip the breaker?

Any idea what else could cause this?

It's on the ASRock BTC+ motherboard using mintcell risers with included cables.

I am suspecting a riser issues, have you tried replacing them? try only on the 5th card then test mining, if its still fine add another, you may get what GPU's is the Culprit. sometimes a faulty PSU and mainboard might be the problem, try to isolate them one by one

[dragonmike]

Check if any given GPU is reporting 0 h/s shortly before everything locks up. If you can narrow it down to one card (GPU or riser fault) or one batch of cards (there's your PSU's fault), all becomes clearer very quickly.

[Bitminer2017]

Turns out I somehow plugged in some longer blue cables instead of the ones that came with the mintcell risers. It's been mining almost an hour just fine now @ 6MH/s on NeoScrypt.

Trying to figure out how to get this darn thing to mine zencash thru Awesome Miner. Gah.

[puwaha]

Turns out I somehow plugged in some longer blue cables instead of the ones that came with the mintcell risers. It's been mining almost an hour just fine now @ 6MH/s on NeoScrypt.

Trying to figure out how to get this darn thing to mine zencash thru Awesome Miner. Gah.

It's not too hard.  What problem are you having?

[NetopyrMan]

... now it's up to 7 and it keeps crashing after about 5 minutes of use...

is there any error code in miner? like illegal memory acces etc ...

or rig is crashing to black screen / bsod?