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A Peculiar Problem Solved

post #1 of 2
Thread Starter 
I share this story so that it is documented somewhere and is able to possibly help someone in the future. Also, I just thought it was so bizarre I had to share it

So I ordered a pair of 4850's to Crossfire a while back. Unfortunately for me, both of them stopped working shortly upon arrival, one, then a week later the other. So for the past several weeks I have been using either the integrated video or just one video card.

The second card just got back from RMA with Sapphire (not too painful, they even waived their $15 fee for the second card...), and I was just so excited to finally try out Crossfire. I plugged in the second card, no video comes from it! I spent a couple hours trying to figure out what was going on... plugged in one card at a time in each PCIe slot, then the other, so on and so forth... But nothing I tried worked! I poked around the bios (my motherboard is a Biostar TA790GX 128M) a bit to see if there was something I was missing, but nothing stuck out. I was thoroughly stumped.

Reluctantly, I checked the online manual. The directions showed nothing special that had to be done to make Crossfire work. I restarted my computer to look at the bios again when I noticed something peculiar...

THE BOARD WAS REPORTING ITSELF AS A TA790GXB A2+!!! This motherboard is very much like mine, except that IT DOES NOT HAVE A SECOND PCIe 16x SLOT!

Now, I bought this motherboard open box from Newegg... I have never had an issue with an open box item, and this is the most bizarre thing I have seen with a motherboard. Frankly, I am astonished that it has worked so long without any issues other than this!

So I downloaded the proper bios for my motherboard and the Windows flash utility (I know, I know, big no-no flashing in Windows...) and attempted to flash. Wouldn't let me. Wrong ROM ID. Crap.

I went into the Biostar folder and found the AFUFlash utility it was calling and found the "Do not check ROM ID" setting. Checked, flashed, restarted, and prayed....

I am happy to report that the motherboard is now working superbly, and I just finished my first game of BFBC2 with Crossfire

Anyone else ever seen this?
    
CPUMotherboardGraphicsRAM
Phenom II X6 1055T Asus M5A97 EVO 2 x Radeon 5870 2x4GB, 2x8GB 
Hard DriveHard DriveOSMonitor
120GB SSD 500GB WD 7300RPM x 2 Windows 7 Pro x64 2 x 23" Dell IPS 
PowerCase
750w OCZ A Desk 
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CPUMotherboardGraphicsRAM
Phenom II X6 1055T Asus M5A97 EVO 2 x Radeon 5870 2x4GB, 2x8GB 
Hard DriveHard DriveOSMonitor
120GB SSD 500GB WD 7300RPM x 2 Windows 7 Pro x64 2 x 23" Dell IPS 
PowerCase
750w OCZ A Desk 
  hide details  
Reply
post #2 of 2
This is amazing, I imagine newegg maybe changed the BIOS chip to repair a faulty mobo, but forgot to flash the right BIOS. Nicely done
Centurion
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 940 @3.3GHz 1.25V Gigabyte 790X-DS4 XFX 5850 8GB OCZ DDR2-800 
Hard DriveCoolingOSMonitor
Corsair Force 3 TRUE Win 7 Pro x64 ACER 23" TN  
PowerCase
400W Silverstone Strider Antec P182 
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Centurion
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 940 @3.3GHz 1.25V Gigabyte 790X-DS4 XFX 5850 8GB OCZ DDR2-800 
Hard DriveCoolingOSMonitor
Corsair Force 3 TRUE Win 7 Pro x64 ACER 23" TN  
PowerCase
400W Silverstone Strider Antec P182 
  hide details  
Reply
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