Sounds like you need updated motherboard/chipset drivers from your
motherboard manufacturer. I've run Vista on an Intel 2.8g HT computer with
no problems.

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"Jussi Palo" <jpalo@community.nospam> wrote in message
news:5C87E2B9-5A03-40CB-8E5D-43F46F397655@microsoft.com...
> Hi,
> having experienced this problem already on Beta 1 version I now finally
> sat
> down and begun tweaking my BIOS settings on my RTM Vista Ultimate. It
> turned
> out that whenever I have Hyper-threading enabled in BIOS Vista hangs on
> boot,
> on the screen where you see the progress bar (and the nice invisible Vista
> logo). The progress bar just freezes.
>
> I can boot the system in Safe Mode just fine and also if I disable HT in
> BIOS. I've run Windows Update and there are nothing to update. I also
> cannot
> find anything on this from on the net, nor on Intel, AOpen, etc. sites.
>
> Any ideas on what I should do to get Vista working with HT enabled?
>
> Here are the specs, please let me know if you need more details.
>
> Computer: AOpen XC Cube EZ915
> CPU: Intel P4 3.0 GHz HT (775)
> MB: based on Intel 915G
> RAM: 2 x 512 MB Kingston 3200 (removing one didn't make any difference)
> BIOS: 1.11 (newest, from early 2005)
> More details: http://xc.aopen.com.tw/Cube-m-specif...0.aspx?Auno=13
>