# \[Solved\]Help needed gtx1070 strix oc ewbf crashing after start nvlddmkm.sys **URL:** \ **Category:** Mining Support\ **Created:** [September 23, 2017, 8:15pm UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732 "2017-09-23T20:15:00Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 23, 2017, 8:15pm UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/1 "2017-09-23T20:15:00Z")
Kindly help… my ewbf miner crashes just after start.it detects the 4 cuda cards but just after detecting them it crashes and blue screen appears showing windows has detected an error and needs to reboot… qnvlddmkm.sys error. I have tried without overclocking the cards but same result…kindly help…i am unable to mine zcash…waiting for reply… My system: Win10 Biostar tb250 pro 8gpu board 4gb ram Intel pentium 4400 dual core processor 4 x gtx1070 strix oc gpus Latest nvidia graphics card… ---
**Author:** ![Uche32](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/uche32/32/11569_2.png) [@Uche32](https://forum.zcashcommunity.com/u/Uche32)\ **Post date:** [September 23, 2017, 9:44pm UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/2 "2017-09-23T21:44:50Z")
try to test one card at the time to see if it is caused by one specific card if still happening try all the raisers with one card. ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 24, 2017, 1:08am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/3 "2017-09-24T01:08:27Z")
@UCH32 will try that out Anyone else having this issue??? ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 24, 2017, 9:08am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/4 "2017-09-24T09:08:32Z")
First I reduced to 2 cards and tested …but computer got hanged and not going any further than this… ![20170924_125106](https://global.discourse-cdn.com/zcash/original/2X/4/4398223efa5e0243f4c3ce0b401032d7bb81bb62.jpg) ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 24, 2017, 9:10am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/5 "2017-09-24T09:10:36Z")
And after that i reduced to 1 card and tested …now everything works fine i am getting 475sols… ![20170924_131452](https://global.discourse-cdn.com/zcash/original/2X/8/83b1e9c36c051e32f5e6646ce8b6da6d0418e098.jpg) ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 24, 2017, 9:15am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/6 "2017-09-24T09:15:21Z")
Kindly guide me now that what to do now ?? Should i seperate the bad card?? Is the bad card not useable for zcash ever?? What should i do with that??.. Waiting for reply… ---
**Author:** ![Uche32](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/uche32/32/11569_2.png) [@Uche32](https://forum.zcashcommunity.com/u/Uche32)\ **Post date:** [September 24, 2017, 9:41am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/7 "2017-09-24T09:41:48Z")
now try again with only the other card ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 26, 2017, 6:01am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/8 "2017-09-26T06:01:01Z")
@Uche32so ihave downloaded latest drivers and run the system…i started the 2 amd using claymore and 4 nvidia using ewbf simultaneously…the system ran smoothley …but only for 1 hour …after 5 hours 2 amd cards are still running smoothly giving approx 550 sols…however 4nvidia had crashed after 1 hour and showing zero sols (i am in office and just checked the rig status)…error is gpu failed restarting but sols are zero Is there any way that if nvidia ewbf crashes it restarts automatically like claymore does…my ewbf says that gpu is restarting but zero sols are shown.if i close the program or restart the computer manually then it again starts mining …but crashes after some time and shows zero sols ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 26, 2017, 6:23am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/9 "2017-09-26T06:23:59Z")
Error is just like this… INFO: Detected new work: a5b1b29dbc8b500ac668 Temp: GPU0: 38C GPU0: 0 Sol/s Total speed: 0 Sol/s Temp: GPU0: 39C GPU0: 0 Sol/s Total speed: 0 Sol/s ERROR: Looks like GPU0 are stopped. Restart attempt. INFO: GPU0 are restarted. CUDA: Device: 0 User selected solver: 0 CUDA: Device: 0 Thread exited with code: 46 Temp: GPU0: 37C GPU0: 0 Sol/s Total speed: 0 Sol/s ---
**Author:** ![Uche32](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/uche32/32/11569_2.png) [@Uche32](https://forum.zcashcommunity.com/u/Uche32)\ **Post date:** [September 26, 2017, 10:39am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/10 "2017-09-26T10:39:40Z")
did you overclock the nVidia cards? for restarting the EWBF you can use this [[CMD]FarmWatchBot, Claymore, Bminer, Dstm, CC, Eth, CastXMR, Phoenix, Trex, Gmnr](https://bitcointalk.org/index.php?topic=2071108.0) I use it too. ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 26, 2017, 10:42am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/11 "2017-09-26T10:42:07Z")
Yes overclocked all 4 cards to +585memory clock and +0 cclock. Getting Around 470 sols ---
**Author:** ![Uche32](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/uche32/32/11569_2.png) [@Uche32](https://forum.zcashcommunity.com/u/Uche32)\ **Post date:** [September 26, 2017, 10:46am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/12 "2017-09-26T10:46:43Z")
so first try to decrease the overclock and if you want to gain more sols by overclocking i suggest to overclock the core clock and a bit the memory clock to give more stability. you said you have GTX1070’s!? so try core clock around +200 and memory clock around +240. mine is running like that and power limit by 63% and temp limit by 67. I get “only” 390sol, but 4.20sol/w ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 26, 2017, 10:48am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/13 "2017-09-26T10:48:26Z")
My cards are 1070 srix OCs… When i increase cclock more than 100,system hangs up…so i was not increasing cclock… ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 26, 2017, 10:51am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/14 "2017-09-26T10:51:22Z")
Rig is running fine for last 3-4 hours… let me see what happens…i think i will use the link u shared for auto restart .it will be enought … Thanks alot for guiding me… this is my first time …last night i wasted 5 hours in configuring this miner … ---
**Author:** ![Uche32](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/uche32/32/11569_2.png) [@Uche32](https://forum.zcashcommunity.com/u/Uche32)\ **Post date:** [September 26, 2017, 10:51am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/15 "2017-09-26T10:51:27Z")
at what temps are they running? if you can’t overclock over 100 by using strix then there must be something realy wrong. did you already uninstall the nVidia driver with DDU and re-installed it? ---
**Author:** ![Uche32](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/uche32/32/11569_2.png) [@Uche32](https://forum.zcashcommunity.com/u/Uche32)\ **Post date:** [September 26, 2017, 10:52am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/16 "2017-09-26T10:52:24Z")
if you want to mine successfully you need to take time for it otherwise you can just forget it… ---
**Author:** ![Uche32](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/uche32/32/11569_2.png) [@Uche32](https://forum.zcashcommunity.com/u/Uche32)\ **Post date:** [September 26, 2017, 11:09am UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/17 "2017-09-26T11:09:40Z")
you’re welcome btw 🙂 ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 26, 2017, 3:39pm UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/18 "2017-09-26T15:39:13Z")
Not DDU . Just upgraded the latest . Miner is running smoothly for last8-9hours now… I guess i should follow the auto restart guide u shared and give it some time… ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 26, 2017, 3:39pm UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/19 "2017-09-26T15:39:59Z")
Temperatures are around 63-65 ---
**Author:** ![mbilalyaseen123](https://avatars.discourse-cdn.com/v4/letter/m/f17d59/32.png) [@mbilalyaseen123](https://forum.zcashcommunity.com/u/mbilalyaseen123)\ **Post date:** [September 26, 2017, 5:55pm UTC](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732/20 "2017-09-26T17:55:09Z")
Thanks alot . Problem solved . All just because of your guidance… [Next page](https://forum.zcashcommunity.com/t/solved-help-needed-gtx1070-strix-oc-ewbf-crashing-after-start-nvlddmkm-sys/21732.md?page=2)