Everything was working fine until I turned off my rig and turned it back on. I'm running hive OS and received a message, "Unable to enum CUDA GPUs: no cuda-capable devices detected."

Does anyone know how to troubleshoot this problem?

I may need to replace the motherboard on one of my six card rigs. What are some of the best choices now for motherboards to be used for mining?

I currently have an Asus prime z270-a.

One of my rigs is running hot and I'm trying to get more air flow by adding fans in front to pull heat away from the rig. The fans have Molex connectors. Is there a hub that connects all of these together? Should I get the Corsair Commander Pro? Are those Molex male pins in the image?

https://duckduckgo.com/?t=ffab&q=corsair+commander+pro&atb=v182-1&iax=images&ia=images&iai=http%3A%2F%2Fwww.guru3d.com%2Findex.php%3Fct%3Darticles%26action%3Dfile%26id%3D31767%26admin%3D0a8fcaad6b03da6a6895d1ada2e171002a287bc1

I'm running a RX 580 rig with six video cards on a Z270-a motherboard. Two  of the cards stopped working, so I checked each one out separately in a PC I have, and they operate and mine just fine. I also tried other power cables from my PSU that are working correctly with other cards, but the fans would not spin.

 I also changed the risers for both cards. That is all I can think  of that could be causing problems. Any ideas why they are  not working? My only thought is bad risers, which I will change, but wanted to get opinions if I am missing anything.

I'm trying to use Windows 10 to mine with one RX 580 MSI Armor OC video card. The card is recognized in device manager and GPU-Z. I downloaded both PhoenixMiner and Lolminer. I modified both batch files. Yet, when I double-click on either one it asks me to "press any key to continue," instead of mining.

Any reason why this isn't working?

I'm using an Asus Prime Z390-P motherboard and 6 MSI RX 580 ARMOR 8G OC video cards with Samsung memory for my rig. I have got four of the cards running fine, but the last two won't run together with the other four. I'm using Hive OS with Phoenixminer and ethermine.

The four cards that are running get 27.4 MH. Overclocking is set at 1050 900 1950 for each card. I did a bios mod by copying the 1750 timing to the 2000 timing and pasted it there using the Polaris bios editor.

If I take card five by itself and put it in PCI slot 1, it works fine. This scenario is the same for card six. I just can't get these two cards to run with the other four.

Bios settings:

- In System Agent Config, I enabled "above 4G Coding"
- In Peg Port config, I changed PCIEX16_1 Link Speed to "Gen2"
- In PCH Config/PCI Express Config, I changed PCIe Speed to "Gen2"
- I also disabled HD audio and turned the power on for power loss functionality

Any clues why I can't get all six cards to work together? Does the MH seem low? I don't know any other way to mod the bios.

I pulled six Nvidia cards off my rig to run six RX 580 MSI armor OC cards. Everything was working fine before I made the switch on the ASUS Z270-A motherboard.

I put a bios mod on each card and they get roughly 26.85 MH each. If I plug card one by itself into PCI slot 1, it will work fine all day. I have tried this with the other five cards as well, and they all work fine in PCI slot 1. If I plug card one into PCI slot 2 by itself, it recognizes the card, but it does not hash right and gives me several invalid shares.

Right now, I tried putting cards one through three in the first three PCI slots, the cards are recognized but it keeps giving me a GPU air watchdog signal and continuously reboots and restarts the miner.

Any suggestions what's wrong? I double checked all of my settings in bios and have Gen2 set as well 4G encoding enabled. Like I said, this was working fine for two years with Nvidia cards and now this problem when I tried to switch to AMD RX 580 cards.

I am trying to optimize one of my RX 580 8 GB cards overclocking settings. I have numerous invalid shares with these settings in the hive OS:

Core clock: 1050
Core voltage: 900
Memory clock: 1950

What is the best way to go about optimizing a card for it overclocking when it's showing several invalid shares?

I'm setting up a new rig and can only get five cards to hash using a z390-p motherboard. I'm using hive OS, and it's recognizing all six cards, but only five are hashing.

I tried plugging in the first three cards by themselves and all of them work. Then I tried plugging in the last three cards by themselves and they work.

Maybe I did something wrong setting up the bios? There was no DMI max link speed to change. I changed PCIEex16 ports to  Gen 2, I enabled 4G decoding.

Not sure what else to do.

I'm trying to set up a new rig with a new motherboard z390-p. I'm running Windows on one SSD and can see the other SSD with hive OS on in my computer. However, I can't see the hive SSD in the bios. I tried disconnecting the Windows SSD, but it still doesn't show up.

Any ideas on how to get it to recognize it in the bios?

Re-flashing the SSD with the Hive OS did the trick.

I've  got a graphics card on one of my rigs that is giving me a temperature of 75° with 100% fan speed. I changed the thermal paste, but it does not help.

Any suggestions? I have a box fan directly behind all of my cards. The rest are running okay.

The fans stopped working on one of my Nitro RX 480 video cards. I've replaced fans on Nvidia cards easily, but the AMD card looks different. The fans are housed in the shroud. Just thought I'd ask if this is fixable?

I had a rig that was running fine. I'm trying to get some RX 480 8 GB cards running on an Asus z270-a motherboard. I'm using Hive OS. I also have the bios mod on each card. The rate will start with a hash rate of about 28 for each card. Then it drops quickly to around 14 or 17. I reran through the bios to make sure all the settings were correct.

Why might this be happening?

I had RX 470 cards on right before this and they were working fine.

I'm trying to get a rig going with a Z270-A motherboard. If I set up bios correctly and then run one card, it works fine. If I turn it off and then connect 2 cards, the bios resets itself to default and I have to change everything again. Then it works fine. If I connect three cards, again, I have to reset the bios to be configured to 2gen, etc., but all three cards hash correctly. With four cards, all I get is a blinking light in the upper left-hand corner. I'm using Hive OS.

With zero cards connected, I can access the BIOS, but if I connect a USB and SSD, my keyboard will not work, and I can't get into the bios. I was trying this to try and load USB WINDOWS 10  media to an SSD.

Also, when I tried to flash the bios, the mouse would always stick on the DCHP option, so I couldn't check for the latest version.

Any suggestions? These components were working before just fine for two years. I'm trying to set up different cards. I did check to see if memory was supported by Asus, and the one I am using is one letter off. However, it worked okay before.

I have a rig with Prime z270-a motherboard

I'm putting RX 470 cards on it, but having trouble.

For the overclocking in Simplemining OS, I set Core MHz to 1050, Memory MHz to 1950 and Core undervolt to 900.  Powerstage is set at 6 and minimum fan speed is 70%.

I'm also using two separate power supplies that are linked together. The  1000 watt PSU is running five cards, and a 450 W PSU is operating two cards.

When I try just one card with no other cards in a single PCI-E slot, it will drop the wattage to 35W and the heat will spike to 85°C.

I had card number one in PCI slot number one and it worked for 24 hours just fine. I try hooking up the first two cards and one of them will drop to 35 W and give me the heat spike.

I just hooked up cards 2, 3 and four and had been working fine. I tried number five and received a message saying that my keyboard was not detected and it wouldn't work. I pulled card 5 off and now I'm getting an error 0xc0000225. 2, 3 and 4 cards were working and now it is giving me an error. If I pull the cards off, it goes back to my screen to go to the bios.

Just to note: I received this error before when I tried another motherboard. I was also using an SSD drive and was using Hive OS. I switched to  another motherboard and a USB and Simplemining OS, but just received this error and having the same issues where wattage drops and the heat spikes.

I have also tried just running the 1000 W PSU by itself.

I don't know what to do. If anyone has suggestions I would appreciate it.

I've been mining ETC with a 3 GB rig using SMOS and Claymore version 11.9. I know that in early 2019 the 3 GB cards will not work for this algorithm anymore. Two days ago,  I received this "cuda error - cannot allocate big buffer for dag. check readme.txt for possible solutions claymore."

I found this thread...
https://bitcointalk.org/index.php

A quick fix was to add -eres 0 to the command line but that's not working anymore as my rig stopped hashing again and won't reboot.

Any suggestions on how to keep this going  until early 2019? Thanks in advance.

I have six Nitro RX 480s with temperatures of 75 66 71 70 63 63. I have a 20 inch box and blowing on them. Otherwise, they would be hotter temps.

These all have the BIOS mod, which has made them warmer. Before the BIOS mod, I just had cards 1 through  three running on the rig in another room and they were all in the 56° level.

I reapplied the thermal paste on card number three, which it needed, but not sure that it made any difference.

Is there any reason why some of these cards run hotter? Is there a way to get them to cool down?

Since card number two is running at 66°, I don't really think it's an issue with where they are sitting on the rig. As cards number one and three are surrounding card number two.

I picked up 6 Nitro+ 480 cards and modded the bios on them. I have them on the Asus z270-p motherboard with a 1050 PSU, 4gb ram, 3930 cpu. I am able to run five of the cards, but when I put on card six, it keeps rebooting. I'm using SMOS. It  recognizes all six cards, it gives the hash rate  and then reboots. I've individually checked each card and riser and they are all working fine when I don't have six cards running. Is there a way to troubleshoot this?

edit.. well, now it's rebooting with  5 cards.

Also, I have this rig on top of two other rigs,, so there is heat rising. These are running at high 70°C. One of the cards was 80°C.. I've only run Nvidia cards before so I am unfamiliar with the settings on AMD. I watched a video and he didn't change any settings except for upping the memory. What are good settings for these cards?

With all the money that is invested in the hardware that makes up a mining rig, I never really see anyone talking about how to protect a rig from power surges.

I have two mining rigs plugged into two separate 15 amp, 125v outlets, and I'm using surge protection on those rigs.

I'm now building a couple other rigs , but I need to plug them into a 20 amp 240v receptacle, and I'm really not sure what to use to protect these rigs.

Correct me if I'm wrong, but I don't think that a PDU has surge protection.

My outlet is far enough away from  my two mining rigs that I need some type of extension. I found a surge suppressor, but it's only rated at 15 amp 125v.

Any ideas on what to use? All of the PDUs that I see have L6-30P cords that are for 30 amp receptacles.