MSI B250 PC Mate doesn't recognize pcie slots 2&3

Toggle sidebar Toggle sidebar
S

Shaving Pvt Ryan

Commendable
Jul 18, 2016
14
0
1,510
So I have the mobo MSI B250 PC Mate and built an ethereum rig. I have done some tests and concluded that pci-e slots 2&3 don't work. I tried slot 6 but it started to smell like burnt plastic so I gave up on it. I have 6 cards but can only use 5 slots, and out of those only 3 get recognized. I have updated the bios, took out the battery and put it back half hour later etc.
P.S.: The fans of the cards do light up so they aren't dead, just not recognized by GPU-z nor MSI afterburner. If anyone can help, thank you.
 
Solution
MrN1ce9uy
Have you tried only using slots 1, 3, & 4 with just 3 cards to see if they work at all? Or just 1 card at a time in each slot? Are you using Windows 10? I would be more willing to bet Windows 10 is just having trouble recognizing the multiple GPUs. Have you modified the GPU BIOS of any of the cards?
Sort by date Sort by votes
MrN1ce9uy

MrN1ce9uy

Judicious
Aug 20, 2009
6,952
638
35,890
Have you tried only using slots 1, 3, & 4 with just 3 cards to see if they work at all? Or just 1 card at a time in each slot? Are you using Windows 10? I would be more willing to bet Windows 10 is just having trouble recognizing the multiple GPUs. Have you modified the GPU BIOS of any of the cards?
 
Upvote 0 Downvote
Solution
S

Shaving Pvt Ryan

Commendable
Jul 18, 2016
14
0
1,510
Yes thats how I did the testing, I tried the gpus 1 by 1 in the 5 different slots and then determined that all gpus work as long as they are in slots 1/4/5. 2 and 3 don't work and I'm afraid the 6th one will burn again as I tried to put the riser correctly the 2nd time yet it made no difference, smoke started coming out again (the 1st time i put it the wrong way around). I installed crimson 17.8.2 and a 4th gpu was recognized however it gave me an error when trying to open the AMD software. I downloaded the program which recommends me the appropriate driver and now it's updating to 17.7.2 although the screen has been black for some time now, i hope it will turn back on again and I'll let it sit for an hour more or so, I don't want to shut it off now since I can't see if its updating or not, lol. I chose to do a clean install.
 
Upvote 0 Downvote
S

Shaving Pvt Ryan

Commendable
Jul 18, 2016
14
0
1,510
The AMD software says "Radeon settings are not available. Please try again after connecting AMD graphics". When I open ethminer .bat file it says "no AMD OpenCL GPU found". But in MSI Afterburner, Device manager, gpu-z etc. they do appear. I dont understand anymore...are they there or not?
 
Upvote 0 Downvote
MrN1ce9uy

MrN1ce9uy

Judicious
Aug 20, 2009
6,952
638
35,890
Sounds like they may have custom BIOS, in which case new crimson drivers won't allow them to work with Windows.

Did you purchase the used? If they have custom BIOS, you can either use the Pixel Clock Patcher (I'm on my phone, you'd have to Google for download link) or use a legacy BIOS that doesn't have ReLive included.
 
Upvote 0 Downvote
S

Shaving Pvt Ryan

Commendable
Jul 18, 2016
14
0
1,510
I found an answer online, it had a code 43 error. I booted in safe mode and used DDU. Then normal boot -> disable internet and installed 16.9.2 driver. I disabled the automate updates for the cards with cmd->gpedit->device update restrictions and device manager to find the IDs for the cards. Now it works properly and I get ~27mh for each card. I also patched it after. All 5 cards are now also recognized. Thank you for the help.

P.S.: Now the PSU is getting hot, the fans aren't running and it's making a noise kind of like a cricket. I might have to change it?
 
Upvote 0 Downvote
S

Shaving Pvt Ryan

Commendable
Jul 18, 2016
14
0
1,510
Earlier I ran into the same problem as before, I tried to put 1 card directly into the 1PCI-e slot(the card whose riser got burnt, because I wanted to check if something happened to the card since I want to sell it if I cannot use 6 cards) and wouldn't get recognized not even in device manager. AMD settings also wouldn't start anymore, giving me an error. I don't know what happened but I just reinstalled windows and took the same steps as before(with the DDU in safe mode etc.) and now at least 4 are working.
After reinstall none of the cards got recognized(also before the reinstall) so I installed the latest driver and then did the method.

About the PSU, I thought so too and read about it, but sometimes it gets really hot and still the fans won't spin. I have 4 GPUs active right now and the fan still doesn't spin.

The cricket sounds also disappeared after I reinstalled windows. Although they come up occasionally, before it was constant without breaks. I don't know if it had something to do with it. This whole ethereum mining rig stuff it's such a pain I'm thinking of selling the damn thing, just wanna make sure which cards work and which don't. Thank you for all the help too.

Also, to answer your earlier question, yeah, it was used "plug and play". I also found a "mining" folder on the SSD with "original" and "mod" .rom bios for both brands of the cards, a driver, something like "winflash" and "atiflash", the patcher and some program Polaris Bios modifier or something. The guy knew what he was doing, I didn't, lol.
 
Upvote 0 Downvote
MrN1ce9uy

MrN1ce9uy

Judicious
Aug 20, 2009
6,952
638
35,890
I used to have a 6-GPU ethereum mining rig, and yes it was a pain. I sold it when ETH dropped considerably a couple months ago. I found that any time I changed anything with the GPU, such as swaping them around in the slots, I had to uninstall drivers with DDU, reinstall new driver, run the pixel patcher, and of course tweak my clock settings to get the best hashrate.

As far as the PSU, I'm not sure why the fan doesn't spin. Sounds like what the person in the link was saying also.

The mining folders and programs suggest he modded the BIOS, which is why you're having issues getting Windows to recognize them and why this process is so painful. But.. the hashrate does improve considerably with modded BIOS. 4 modded GPUs can hash at the rate of 5 stock GPUs.

If you want to learn more about mining, I'd suggest going to these two sites. I found them extremely helpful.

https://forum.ethereum.org/

https://bitcointalk.org/index.php?board=160.0
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom