GA EP45-DS4, XFX RX480 OpenCL Claymore crash

[_greenie]

Hello everyone,
Hopefully someone will be able to help me:

I'm a relatively new miner to ethereum

I dabbled in mining back when bitcoin wasn't profitable, but alas these many years later i now see i could have been rich hadn't i formatted that hard disk a million times since then. But I digress

Today I'm here asking desperately for help. I've tried every online resource available to no avail

My miner crashes after OpenCL - this leads me to believe it's a driver issue

However, when I first hooked up the rig and got all the startup problems resolved, the Win7 that was on the hard drive did a test run and even mined a lucky share, without any crash.

After hooking up the other cards, I flashed the bios on one of the XFXs (I already have a rig running so I'm pretty sure i did it correctly) and it crashed but i tried again on the default bios, too - crashed again. I tried Win10 then since people online reported less issues with it, same thing.
Disabled any overclocking in Afterburner - same crash, I tried Win7 again, same crash.



SPECS:

Gigabyte EP45-DS4 with latest bios
E5400 Dual Core 2.7
2x 1GB DDR2 Kingston (667) RAM
RealPower 650W > mobo + 1 card + SSD
Corsair TX750 > 4 cards
-hooked in series? with a psu connector from ebay, i power them both on at the same time
5x XFX RX480 8GB
-three on 1x risers 1 directly on second PCIE 16x on the motherboard and one on 16x risers from the last 16x PCIE slot (tried various combinations)
SSD Samsung 60GB
Win10 Pro Pre-activated [gen2]
+
MSI RX470 (extra on the side)

So. Why does my miner crash after OpenCL, and what can I do about it?

I have 16GB Virtual memory set. I tried a wide range of drivers, each one safely removed and reinstalled with DDU in safe mode.
Before I go into any purchases, I'd like to get some more experienced advice
Additionally, Win10 also reads only 2 cards, while on Win7 I had all 5 cards detected, but couldn't manage the 5th (options were greyed out)
I found online that this motherboard's 16x slot shares the lane with 1x so this might be part of the problem, but then again some russian forum that I translated mentioned a guy plugging in 1 card, having everything work, and then plugging the remaining 5 at once after that and everything worked for him right then and there

I tried to give as much information as possible. I know my way around computers more than the average Joe, but I'm by no means expert! I don't know much about the inner workings of the motherboards, and I have to admit the electricity part of it i don't perfectly understand so I might have done something wrong (I'm a civil engineer :p )
Please offer any sage advice or roasts, as preferred.

I have a pic of the build if it helps

[kemo6600]

Claymore need at least 4GB of ram, that is the solution for the miner crash at start

[_greenie]

My friend if this is the solution to all of my problems, pm me your address and the first few shares of mining while i set up are on you! 

Can I ask why it mined one share with 1 card in the start, if you know?

[grimjaw]

I believe it is the problem with graphic driver.
could you clarify something as listed below:

1) by saying miner crash does this means only the Claymore is crashing? (means it still on desktop/windows)
    if yes try to go to Device Manager and delete the driver (right click uninstall)

2) sometimes oc-ing in MSI AB can cause freeze (just pure black screen) - solution, try to disable auto start up in MSI AB

3) you saying you disabled any overclocking, what kind of crash? a screenshot would help.

4) I believe a minimum of 4GB physical ram is required for that card to work, kindly clarify whether GPU memory detected is 8gb(in the Claymore Miner)?

5) for the win10 detecting 2 cards only, try update your windows and reboot the system.

Good luck and be patience.

[Zemomtum]

Claymore need at least 4GB of ram, that is the solution for the miner crash at start

You also need to set a big virtual memory.

[_greenie]

I believe it is the problem with graphic driver.
could you clarify something as listed below:

1) by saying miner crash does this means only the Claymore is crashing? (means it still on desktop/windows)
    if yes try to go to Device Manager and delete the driver (right click uninstall)

2) sometimes oc-ing in MSI AB can cause freeze (just pure black screen) - solution, try to disable auto start up in MSI AB

3) you saying you disabled any overclocking, what kind of crash? a screenshot would help.

4) I believe a minimum of 4GB physical ram is required for that card to work, kindly clarify whether GPU memory detected is 8gb(in the Claymore Miner)?

5) for the win10 detecting 2 cards only, try update your windows and reboot the system.

Good luck and be patience.

1 - After starting up and detecting the cards, claymore just goes into non-responsive state, after which windows does the report crash thing https://i.imgur.com/QqlBrXy.png

2,3 - I meant bios and afterburner, the GPU loads just fine and i don't have any black screen issues
Although, when using the 470 as primary display it loads with artifacts on greenscreen even before POST, and the monitor flickers sometimes (but it's a shitty monitor anyway) - but i don't feel this is related to the problem

4 - ! - getting more ram today

5 - running on latest update
This could be a known issue with these motherboards, and I might have to http://thumbnails117.imagebam.com/53979/8dda08539781907.jpg

start.bat

Code:

setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100

EthDcrMiner64.exe -epool eth-eu2.nanopool.org:9999 -ewal mywallet -di 0 -mport x -tstop 95

with the proper values for the port and my nanopool wallet, naturally

Claymore need at least 4GB of ram, that is the solution for the miner crash at start

You also need to set a big virtual memory.

Thank you, I already have set it to 16000-16024

[ronin82srb]

Hi, I have a similar problem, I bought new xfx rx480 4gb, hynix memory, straps 1500 copied to upper, gpu 1100 mem 1900  -cvddc 980 mv, miner works for an hour and crashed , gpu power draw always goes near to 90w and more. With a -cvddc 940mv Im getting 80+w but miner immediately crash and says ''display driver stops working''. I tried to lower the gpu clock and memory clock, more or less mv , always the same result - crash and blue screen. I use also msi afterburner. I have more cards, but they are 470's and working great few months already.

Is there any chanse to do it to be stable?

[_greenie]

I undervolt mine in afterburner -42

UPDATE:

Indeed it was the god damn RAM
Mining happily with 4 until the extra risers for 16x arrive
https://i.imgur.com/85eBAnh.png