Topic Title: ANOTHER Crossfire problem
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Created On: 11/01/2013 03:28 PM
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 11/01/2013 03:28 PM
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AMD FX-8350 (eight core) 4.0 ghz>>

Asus M5A99FX Pro R2.0>>

ADATA XPG Gaming 2.0 16gb DDR3 2x8Gb 2400 MHz>>

2 x MSI Radeon HD 6790 OC Video Cards (Crossfire)>>

WD 600 Gb Velocirapter (System)>>

WD 600 Gb Velocirapter (Work Disk)>>

WD 600 Gb Velocirapter (Flight Programs)>>

Ultra Gladiator Mid Tower case (case fans replaced with Cougar Vortex PWM fans)>>

Antec Cooler H2O 920 (2 x fans replaced with Scythe Gentle Typhoons)>>

> >

Windows 7 x64 Ultimate>>

I had to do some cable maintenance and change out a couple of the hard drives for 1TB Velociraptors. Had some problems with the Catalyst 13.9 driver in FSX, so I deleted the old drivers and installed 13.4, everything worked fine for a couple of days. When I booted up this morning, motherboard beeped to let me know that "no video device installled". Removed the Crossfire bridge and removed power to the second video card - system booted, went into windows - all ok. Reconnected the second card, moved video cable to second card, removed power to first card. Booted system, went into windows - all ok. Checked drivers. Reconnected first card and booted - 1 long beep and 3 shorts - "no video device installed".

Anyone have any idea how I start troubleshooting this?

 11/07/2013 11:36 AM
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To confirm:

  • both cards physically in PCI-E slots
  • power cables connected to both
  • CF bridge attached

With those 3 circumstances the system will not post, correct?  Can't get into Windows, correct?  Just getting motherboard beep codes, correct? 

If all the above is accurate that it is certainly not an OS, driver or software issue.  Strictly hardware.  Maybe a bad CF bridge or something went wrong with the motherboard.  Maybe an issue with power?



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