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