# 4 \* GTX 1070 , MSI Z170A M5 and Windows 7 Mining Rig Challenges

**URL:** <https://forum.zcashcommunity.com/t/4-gtx-1070-msi-z170a-m5-and-windows-7-mining-rig-challenges/19036>\
**Category:** Mining Support\
**Created:** [July 12, 2017, 7:58am UTC](https://forum.zcashcommunity.com/t/4-gtx-1070-msi-z170a-m5-and-windows-7-mining-rig-challenges/19036 "2017-07-12T07:58:08Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![TheBaldMiner](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/thebaldminer/32/5541_2.png) [@TheBaldMiner](https://forum.zcashcommunity.com/u/TheBaldMiner)\
**Post date:** [July 14, 2017, 6:53am UTC](https://forum.zcashcommunity.com/t/4-gtx-1070-msi-z170a-m5-and-windows-7-mining-rig-challenges/19036/12 "2017-07-14T06:53:44Z")

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Hi Guys ,  
First thank you so much for the suggestions.I really appreciate it.  
Here’s what I did  
**Updated the BIOS to the most recent version [here](http://www.geforce.com/drivers) V384.76**  
**Spread out the power connections to the cards and the risers with separate cables each riser drawing power directly from the PSU with it’s own cable**  
**Use DDU to unistall current driver version**  
**Connected all the cards using Risers**  
The results were 😐  
**I saw all the cards under device manager but one card showed missing card drivers**

 ![](https://global.discourse-cdn.com/zcash/original/2X/b/b649e1c230cfcd4329bfe487988a8f4b26f68102.jpg)

So at least I can conclude that the risers are not messed up.;;though I order some new ones…😐  
When I tried updating the drivers a blank screen came and the windows restarted to a restore point that didn’t have drivers (this was created during DDU uninstall)…😞  
Disappointed I went to plan B to **remove the card and try mining with 3 cards…**  
So with 3 GPUs here are the result 😑  
First connection

 ![](https://global.discourse-cdn.com/zcash/original/2X/2/2cd070f0c738d11a4be9e6d3898c4c0173e00dd1.jpg)

Results:-  
**The computer froze for 30 min until you restart from the power socket to restart**  
**With EWBF Miner the computer froze gave an error then a blue screen**

 ![](https://global.discourse-cdn.com/zcash/original/2X/4/4701fcd6eb3c5829aae5556bf9057c15ffeb0339.jpg)

After the above I get a blue screen.

So I decided since I have 3 \*16 PCIE ports on the board I just connect all the cards directly on the board try mining from there…so my connection is as below…

 ![](https://global.discourse-cdn.com/zcash/original/2X/6/690dd2c6f35a0ef2ebf88f4ed8e156d43708661d.jpg)

I was able to successfully mine for 3-4 hours on with good numbers

Until this happened 😧

 ![](https://global.discourse-cdn.com/zcash/original/2X/2/2bbd597e5c6362a5c1c16c8bf6b425c66774cc63.jpg)

The above happens with EWBF’s miner and then the miner exits.  
With nice hash the following happens : -

 ![](https://global.discourse-cdn.com/zcash/original/2X/c/ccd40506c213eb95b6d5ebad74b1344a759c8710.jpg)

Excuse my image…!!  
I managed to fix the errors by restarting my machine and lowering the overclock on the cards.  
Currently still mining on the board…😢

Thank you again for your suggestions and and more so for reading this…👍

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