One of my cores has gone AWOL !!

[poltergeist666]

Houston, I have a problem .......

If I install either a Opty 170 or a 4800+ on to my Asus A8N32 Sli moby, and then check within device manager, it only lists one core instead of two under processors. There used to be two listed, but no matter what CPU I try, when I reboot, I can't get device manager to show both cores.

also

If I check the temps, using the program coretemp, it only shows one temp, instead of the two core temps that it used to.

I have checked both chips out on another system, and they both came up with two cores within device manager. (Thus, both the OPTY and the 4800 are intact when it comes to their dual cores)

I have the most up to date bios and drivers, and have cleared the CMOS, but although it lists the chip on the post screen, the PC is definately only seeing it as a single core CPU, by the time it reaches to the desktop.

Anyone got any ideas, then I'd be more than pleased to hear them.

Cheers in advance.

 

[poltergeist666]

Cheers for the replies.

Why would both cores show in device manager one day, but then disappear the next?

It's got me beat - I've swapped out cpus and been messing with this all afternoon, right up until now..

To say I'm confused is an understatement. When the PC posts - it says count =2 , which I assume means two cores. If thats the case, the PC is seeing both cores, but not loading them into device manager.

I think I'll bite the bullet and re-install anyway.

 

[poltergeist666]

Update -

Just done a total clean XP reinstall, and after checking at each stage of service packing/updating/patching, there was never any sign of the second core within device manager.

Because I know that the two CPU's checkout with another system, I'm beginning to think that part of the motherboard is borked.

I've been at this far too long today - cheesed off and bed beckons!

Nite all.

 

[poltergeist666]

Cheers guys - going to contact either OCUK or Asus tech support today. Will let you know how I get on.

Thanks again.

 

[poltergeist666]

I think you may be onto something.

I phoned OCUK tech support, and they gave me an RMA number. I cannot be without a PC, so bought the same motherboard again locally to tide me over, as I have another use for it when the replaced moby comes back.

However.

I did a complete reinstall of windows, including a reformat, and on the new m//b installation, I have the same problem.

This is driving me bloody mad now. Just wasted a load of time and still can't get to the bottom of this.

 

[poltergeist666]

Found the problem.

When I installed windows, there is a problem with this board, where if you don't have the parrallel port installed, it hangs the installation, by saying "This motherboard is not ACPI compatiable".

Like a dimbo, I disabled ACPI during a reinstall, but didn't re-enable it afterwards. DOH!!!!!

I'm just a little greyer, and more than a little older and wiser now!

Thanks for everyones help and suggestions and esp to manveruppd, who mentioned ACPI, which set the old cogs whirring, and alarm bells ringing!

 

[poltergeist666]

Cool, so it's working now?

It is indeed - all I got to do now, is pick up all the hair that I ripped out!