Solved BIOS Update for CPU breaking GPU driver.

September 1, 2011 at 09:35:25
Specs: Windows 7 32/64bit, Athlon 64 X2 2Ghz/ Athlon 64 1.8Ghz
I have a computer I built a long time ago which I have recently been using as a gaming PC.

It was working fine with the previous hardware:

GA-K8NS-939
Athlon 64 3000+
4GB PC3200 DDR400
Sapphire ATI 3850 AGP 512MB GPU
Windows 7 64bit

This setup worked well, it was stable and could play reasonably modern games well. However I felt that the cpu was a bottleneck and I could improve performance by installing a dual core CPU. So I got an Athlon 64 X2 3800+ CPU and installed it.

Everything continued to work fine, but I noticed in Task Manager that only one core was working. I did a little checking and found that my BIOS version was too old to work with dual core CPUs, so I flashed the BIOS to the newest version and rebooted.

Windows blue-screened before the desktop was reached. I tried to repair it but it didn't work. Eventually I decided to just reinstall Windows, everything went well until I installed the drivers for the 3850, when I would either get the blue screen during reboot after installation.
I tried updating Win7 fully before installing the GPU driver, I also tried using both the newest ATI drivers from their website and the older version that game in the box.
I tried installing Windows 7 32bit rather than 64bit. With this setup the system didn't blue screen during boot, but the ATI application reported that "No ATI driver is installed or the driver was installed incorrectly".

Eventually I flashed the BIOS to an earlier version, but which was still capable of sustaining dual core CPUs. There was no change.
So next I flashed the BIOS back to version 2, which was the version I was using originally.

After the reboot both the 64bit and 32bit versions of Windows 7 boot up just fine with working graphics drivers, but I'm only getting the use of one core of the CPU.


The only thing I can think of that I haven't done is verified that the new X2 CPU is actually working 100% correctly.

To summarise, my problem is this:

I have to choose between using the correct drivers for my GPU, but only getting 50% of the performance of my GPU or...
Update BIOS and get both CPU cores working but use Windows standard VGA driver for my graphics card.


Any help or suggestions would be greatly appreciated.
I will run a CPU test if anyone can recommend a good, free, easy to use utility to do it.

Thanks muchly,
Sam

Biscuits are good, but keep the crumbs off your keyboard!


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✔ Best Answer
September 1, 2011 at 20:57:29
Windows 7 does not work with the combination of an nForce 3 motherboard, dual-core CPU, and ATI AGP card. It's nVidia's fault; they didn't properly implement dual-core support on the nForce3. No BIOS update is gonna change that.

If you want to continue using Windows 7, you'll have to use your 3000+ single core or switch to an nVidia AGP card. If you want to continue using your dual-core CPU with the ATI card, you'll have to downgrade to WinXP (Vista won't work either).

Socket 939 | Dual-core Opteron 185 @ 3.2GHz | 4GB | 1.0TB | Win7 x64
GeForce GTX 460 1GB | X-Fi Ti Pro | A8N32-SLI Deluxe | Antec P182



#1
September 1, 2011 at 12:23:40
Start > run > type msconfig > boot tab then advanced options(tick number of processors and then set it 2).

GA-K8NS-939 CPU support list http://www.gigabyte.com/support-dow...

GA-K8NS-939 rev. 1.x CPU support list http://www.gigabyte.com/support-dow...

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


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#2
September 1, 2011 at 13:21:44
That didn't help at all.

I should make clear I checked compatibility before sourcing the parts. They should all work together nicely.

And when I use version F2 of the BIOS the graphics card works perfectly, but the processor is used as if it were a single core.

If I use version F5 of the BIOS or higher the processor is recognised as dual core and works very well, however the graphics card drivers will not work.

Biscuits are good, but keep the crumbs off your keyboard!


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#3
September 1, 2011 at 14:04:46
Where did u get F2 BIOS? If u look at CPU support list u will find F1, F3, F5, F8, & F9 BIOS versions. After flashing BIOS clear CMOS & correct settings.

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


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Related Solutions

#4
September 1, 2011 at 15:31:24
http://uk.gigabyte.com/products/pro...

F2 is the second version of the BIOS, it's the version which was installed when I bought the motherboard and which I had no reason to change until I upgraded the CPU.

Biscuits are good, but keep the crumbs off your keyboard!


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#5
September 1, 2011 at 20:57:29
✔ Best Answer
Windows 7 does not work with the combination of an nForce 3 motherboard, dual-core CPU, and ATI AGP card. It's nVidia's fault; they didn't properly implement dual-core support on the nForce3. No BIOS update is gonna change that.

If you want to continue using Windows 7, you'll have to use your 3000+ single core or switch to an nVidia AGP card. If you want to continue using your dual-core CPU with the ATI card, you'll have to downgrade to WinXP (Vista won't work either).

Socket 939 | Dual-core Opteron 185 @ 3.2GHz | 4GB | 1.0TB | Win7 x64
GeForce GTX 460 1GB | X-Fi Ti Pro | A8N32-SLI Deluxe | Antec P182


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#6
September 1, 2011 at 21:27:24
+2

We can not fight new wars with old weapons, let he who desires peace prepare for war - PROPHET.


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#7
September 2, 2011 at 03:29:21
Bummer.

Thanks for the info, Jackbomb.

Biscuits are good, but keep the crumbs off your keyboard!


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