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Author Topic: Verification failed, check hardware!  (Read 6935 times)
antz123
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BlightyCoin - UK Custom Bitcoin Miners!


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May 21, 2011, 01:57:31 AM
 #1

Hey all, just finished setting up a dedicated rig, but having a few problems...

For some reason when using poclbm I'm getting this Verification failed, check hardware message on one of my cards. This only happens if I run both of my cards at once.

When using diabloMiner, it is happy to run both miners on both cards but one of them ends up mining at a rate of about 5mhash

What do you think could be causing the problem? Specs:

AMD Sempron 140
2 x 6950
Windows XP 32 bit
running catalyst 11.5 (crossfire enabled)

Thanks in advance!  Wink

http://i.imgur.com/XiDcM.png (http://blightycoin.nfshost.com/)
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benjamindees
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May 21, 2011, 02:04:12 AM
 #2

Power supply?

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antz123
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May 21, 2011, 02:07:55 AM
 #3

600W OCZ psu, more than enough for the system. I ran furmark for a while too... it didn't have any problems and ran both cards fine.

http://i.imgur.com/XiDcM.png (http://blightycoin.nfshost.com/)
Littleshop
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May 21, 2011, 04:02:45 AM
 #4

600W OCZ psu, more than enough for the system. I ran furmark for a while too... it didn't have any problems and ran both cards fine.
Seems a little close to me.  I would think you would want 700w for two video cards.

willaien
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May 21, 2011, 04:24:32 AM
 #5

Quote
running catalyst 11.5 (crossfire enabled)

Disable crossfire and try again.
benjamindees
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May 21, 2011, 05:09:53 AM
 #6

I would open up the PS and check for bad caps.  Only if you're comfortable with that sort of thing, of course.

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Basiley
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May 21, 2011, 12:38:47 PM
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600W OCZ psu, more than enough for the system. I ran furmark for a while too... it didn't have any problems and ran both cards fine.
what 12V caps had that "600W" PSU ?
in Amps.
picollo7
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May 23, 2011, 05:53:06 PM
 #8

I am having this same problem too.  It's not the PSU.

4850
750 W PSU
win7 32 bit
using 2.1

works anywhere from 5 - 30 minutes and then says Verification failed check hardware.

Tried with poclbm from 4/28 and 3/25.

the -v flag does not help.

Very frustrating and I know many other are experiencing this.  One dude had a hack to restart poclbm automatically every 5 minutes.  Sounds like a terrible plan to me.

Please help.  Thanks!
Isepick
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May 23, 2011, 06:16:23 PM
 #9

I had this problem in a single card rig powered by an Atom board. I slowed down my overclock on the 5850...problem went away. I think the Atom might have been a bit overtaxed. Every system is different, so YMMV.
Kluge
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May 23, 2011, 06:24:54 PM
 #10

I slowed down my overclock on the 5850...problem went away.
This solved the problem in one of my cards having that issue as well.

Don't mix your coins someone said isn't legal
sniper_sniperson
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May 23, 2011, 07:53:45 PM
 #11

I got the same problem yesterday so reading posts here minds me that one of the cards has bad bios/bad gpu. This happened on my test cross rig - 5870 + 5850, well after 30 mins the 5870 throttles down and goes to 725Mhz from 870 under linux, nevertheless that the dedicated room has average 18-20'C temp in 48h interval. Under Windows disabling crossfire in the CCC doesn't help, only the second card disappears from GUIMiner's device list. Sapphires are popular with their bad bioses, have 3 5970OC editions and all of them give BSODs unless I change it with ASUS or Gigabyte firms ...

Specs of the rig:
Windows XP 32bit
AsRock N7AD-SLI (sli-singlecard bridge)
E2180 downclocked to 1.6GHz
Gigabyte 5870OC - all leds are in green state
Sapphire 5850 Xtreme
1000W Cooler Master for cards and 400W Fortron Saga for the other components
picollo7
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May 26, 2011, 05:05:39 PM
 #12

Ok, I feel kind of dumb.  With the 4850, I just updated the drivers (including latest SDK) to the latest version, and the problem went away, and I got even better performance.

So, update your drivers if you get this. Wink
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