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Hyperthreading Not Working (4 posts)

G'day All,

I have a Gigabyte GA-8ST667 Motherboard, which until recently i was running a Celeron 1.8Gig. Having decided to upgrade to a intel p4 socket 478 3.06gig cpu.

My problem is i cannot get hyperthreading operational, i have tried changing the boot.ini, and adding the halmacpi.dll to system32 folder, along with ntkrnlmp, as i had read on the net.

I have reinstalled operating system, (winXp Pro) with sp2 to no avail. I was hoping the reinstall would pickup on the cpu's ability to hyperthread but hasn't.

I have looked thru Bios, exhaustively, with no ability to activate the hyperthreading from within the bios. (bios is F3-version/CURRENT!!)

Any ideas?

Thanks - Mick.

Re: Hyperthreading Not Working

The Gigabyte web site says the P4-Northwood 3.0G (HT) CPU is supported.

Have you tried Gigabyte technical support?

Re: Hyperthreading Not Working

Mick,

Try this (at your own risk, so please backup all your imortant data before going ahead). This is how I get HT to work under Windows 2000. It should work the same for XP:

Right click My Computer, click Manage, click "Device Manager" from the list on the left. On the right pane double click on "Computer" and double click on "ACPI Uniprocessor PC". Click on the "Driver" tab and click on "Update Driver". From then on you should be able to select "ACPI Multiprocessor PC". Windows will then ask you to reboot. After reboot, you'll either end up with either a BSOD or a system running HyperThreading.

If you do get a BSOD upon reboot, try pressing F8 when rebooting and "Load Last Known Good Configuration". Failing that you may need to reformat and reinstall XP.

Regards,

Daniel

Re: Hyperthreading Not Working

Hi Mick,

Gigabyte mother boards sometimes have a second layer bios setting which you can get to. When in the bios by using Ctrl+F1 there should be a setting there for turning off Hyper threading: un-tick it.

But looking at the gigabyte web site and manual gives no indication that the board supports Hyperthreading so you may need to upgade your mother board as well as CPU.

Good luck

John.

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