"Annesouth" <Annesouth@xxxxxx> wrote in message
news:5FF343B6-CB20-45DF-836B-0764EA602F6B@xxxxxx
Quote:
>I have an AMD X2 3800 dual core processor on an Asus M2VMX motherboard.The
> cores show up fine in device manager, but when I check using any number of
> diags only one processor shows up. I've updated all of my drivers and bios
> without any luck. I'm running Vista Home Premium.
Did you upgrade from a single core processor after Vista was installed?
If so you'll have to reinstall it. Vista (and XP) configure themselves
during installation and not again even if the hardware changes.
If Device Manager shows ACPI multiprocessor for your CPU, then
it's correctly identified and the diags are counting the number of physical
processors (one) rather than the number of cores.
Tom Lake