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Cant get windows to reconize my dual core???

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January 4, 2007 7:13:54 PM

I just build a brand new computer with an Intel Core 2 Duo 6300, Asus P5N-E SLI Board and Windows will not recognize my dual core cpu. CPU-Z only reports 1 cpu and coretemp only shows 1 cpu temp. I do not know what to do.. Ive tried reinstalling windows xp pro w/sp2 twice now and it will not fix the problem. As far as i know i have the latest bios according to the website.. Anyone know how to solve this?

More about : windows reconize dual core

January 4, 2007 7:37:20 PM

um... pc specs? board, cpu, psu, etc?
January 4, 2007 7:45:27 PM

Asus P5N-E SLI nforce 650i
Intel Core 2 Duo E6300
Corsair HX520 Powersupply
OCZ Platinum DDR2-800 @ 4-4-4-12 2.1V
Western Digital 160gb Hd w/16mb l2 cache
Sapphire x1900GT w/256mb ram
Sound Blaster 5.1 Live
Scythe Ninja Heatsink w/AS5
Related resources
January 4, 2007 7:54:02 PM

Only shows 1 graph.
January 4, 2007 7:59:08 PM

Check bios. I know on the 680i bios there is a setting where you can turn off the second core. Perhaps yours is off there. I believe its under CPU config area.

Hope this helps
January 4, 2007 8:00:52 PM

you sure its a X2?
you didnt confuse yourself with a 3800 AMD single core?


remember that there are (very rare... ) some single core 3800 with the manchester core ( Ie, 1 core defective )
January 4, 2007 8:02:52 PM

It's a core 2 duo, not an amd
January 4, 2007 8:19:13 PM

Quote:
Only shows 1 graph.


First, I'd check the BIOS as suggested above. Then, see if Device Manager shows two processors under the Processors group.

Quote:
um... pc specs? board, cpu, psu, etc?


LOL, he mentioned them in the first post. Since when does the PSU have anything to do with how many processors are seen? :lol: 

EDIT: After reading the manual, the only option I saw was for HyperThreading. I'm not sure whether Asus tied that to the second core or not, but it's worth a shot (a long shot). While you're in that section, it shows the processor info. Does it show up as a Core 2 Duo?
January 4, 2007 8:32:23 PM

The only thing it shows in device manager is "Standard Pc" .... I just checked the BIOS and theres nothing about turning on/off the 2nd core.. Also CPU-Z at the bottom says 1 core 1 thread..?




also, i dont see anything about processors in device manager..?
January 4, 2007 8:37:16 PM

Quote:
The only thing it shows in device manager is "Standard Pc" .... I just checked the BIOS and theres nothing about turning on/off the 2nd core.. Also CPU-Z at the bottom says 1 core 1 thread..?




also, i dont see anything about processors in device manager..?


Hmm... In XP, just below Ports is Processors. Mine says:

Intel(R) Pentium(R) M processor 1.60Ghz
January 4, 2007 8:40:45 PM

Mine does not have that, but i see what you are saying because my laptop has it there... I dont know what to do, ive reinstalled windows already a couple of times. It shows that i have a core 2 duo in the general tab under my computer though??
January 4, 2007 8:42:57 PM

Was the HyperThreading option enabled? If so, the only other thing I can think of is to ensure your BIOS is updated to the latest.

EDIT: I just checked my Dell Dimension 4700 and it shows processors in Dev Mgr as well. Are you sure this is XP Pro? Mine are both XP Pro, and I don't have an XP Home machine to look at.

EDIT 2: After looking here it appears XP Home does not support multiple CPUs (and I am assuming multiple cores since they appear as multiple CPUs). Additionally, that would explain why there is no processors group, as you'll only have one supported anyway.
January 4, 2007 8:53:07 PM

100% sure its xp pro. Also, i do not have that hyperthreating option in the bios, my bios also looks different from the one in the manual so i dont know what is going on. My bios revision is 0202 which is the latest according to the website...
January 4, 2007 8:56:48 PM

Quote:
100% sure its xp pro. Also, i do not have that hyperthreating option in the bios, my bios also looks different from the one in the manual so i dont know what is going on. My bios revision is 0202 which is the latest according to the website...


Right-click My Computer and hit Properties. On the General tab, it will say "Professional" below "Microsoft Windows XP".
January 4, 2007 8:59:34 PM

Quote:
here it appears XP Home does not support multiple CPUs (and I am assuming multiple cores since they appear as multiple CPUs). Additionally, that would explain why there is no processors group, as you'll only have one supported anyway.

As far as i know Windows XP Home supports two cores, but not two sockets. I might be wrong though. :wink:
January 4, 2007 9:08:01 PM

I found this on AMD forums talking about same thing... It may help if someone who knows a little more can verify that it has potential :) 

Quote

" It's possible to update the configuration without reinstall all in XP and 2000.

Right click on "standard PC", select update driver and select "Install from a list of specific location (Advanced)".

After select "Don't search. I will choose the driver to install." and then "ACPI Mulprocessor PC".

Here, perhaps, you must deselect "show compatible hardware".

After that, windows must restart and rediscovery the modifications.

Perhaps, windows will ask some drivers after reboot. "
January 4, 2007 9:20:07 PM

When I try to update drivers for the standard computer under device manager, it does not have that option at all.
January 4, 2007 9:35:58 PM

To clarify on wondering if you show two processors. Just right click on my computer and look at your computer info. It should indicate two of the same processing speeds going.

As far as your problem not seeing the processors, call intell not microsoft to solve the problem. And if all else fails call asus for any help. As for your motherboard, is it the Deluxe or SE edition?
January 4, 2007 9:58:32 PM

Did you reinstall from scratch or just do a repair?

I had this problem once and it was definatly due to windows not loading the HAL correctly.
I used this method to correct it http://www.nforcershq.com/forum/1-vt12269.html?postdays=0&postorder=asc&&start=0

You might want to wait till some more experienced people have looked at this link and given thier advice, They may know an easier way I know this worked for me though.

That was on an AMD X2 for me however.
January 4, 2007 10:01:24 PM

not sure if you checked here yet, but under Task manager with the Performance tab selected you say you only see one graph for CPU Usage History? if so what is selected under View -> CPU History? (do you have One graph per CPU selected?)

Anybody know if windows users rights would affect this? As in if he is not logged in with admin rights would he be seeing things like not being able to update a driver?
January 4, 2007 10:12:47 PM

Amazing how many people do read the entire thread before posting.
January 4, 2007 10:14:24 PM

Yes, I have that and it only shows 1 cpu. Also I am admin on my computer. Should i try to run prime95 or something to see if both cores are working?
January 4, 2007 10:35:27 PM

well I'm guessing here... but if under hardware properties it doens't list your computer... perhaps you forgot to install it? :lol: 
January 4, 2007 10:37:53 PM

Are you saying I read the whole thread or not??? cause if you're saying I didn't then quote me where someone asked if he had his view set correctly for showing both CPU's.
January 4, 2007 11:32:00 PM

Still no luck.?
January 5, 2007 6:13:41 AM

Do you installed windows from an original disc? If not, try an original one, or another copy(not from the same image).
January 5, 2007 6:44:51 AM

The HAL might very well be the problem. Did you do a clean install of winXPpro or did you keep your HDD with windows already on it from your previous computer and do a repair with windows? If you tried a repair or even used a program to image the data from your old computer HDD to this computers HDD, then your HAL may not read the two cores properly.
January 5, 2007 6:55:37 AM

Everytime I go to reinstall windows xp pro, it says something like it cannot recognize my config and if i would like to install a "Standard PC" or "Other" and when i click other, it says i need to insert a disk. But ive tried 2 fresh installs of xp pro and nothing?
January 5, 2007 7:12:02 AM

Clean wipes of the HDD before each install?
January 5, 2007 3:08:46 PM

Yes
January 5, 2007 4:36:09 PM

:idea: Have you installed the chip-set drivers for your systemboard?
A friend of mine in the past had a similar problem with the Graphics card not being detected correctly, and he couldn't install the correct drivers for it either. It turned out he didn't install the chip-set drivers, so Windows couldn't identify hardware over the buses correctly until the the chip-set drivers where installed first.
January 5, 2007 4:41:13 PM

What version of windows? XPPro what?
January 5, 2007 4:44:58 PM

Windows XP Pro w/SP2 . Also it says my CPU in the bios as well as in the general tab in my computer.
January 5, 2007 5:12:08 PM

For whatever reason XP is not seeing the M/B as being ACPI compliant. In the BIOS, is there a selection pertaining to ACPI and is it enabled?
January 5, 2007 5:25:24 PM

Judging from what you said Device manager says, your windows setup is not installing the correct hal. To do so follow these instructions:

1. During the Text-mode phase of the Setup program, when you receive the following message across the bottom of the screen, press F5:
Press F6 if you have to install a third-party SCSI or RAID driver.
If you press F7, the Standard PC HAL loads and the ACPI compliance check is bypassed.
2. You receive the following list of computer types. A brief description of each HAL is included here:
• ACPI Multiprocessor PC
Applies to a multiple-processor ACPI computer.
• ACPI Uniprocessor PC
Applies to an ACPI multiple-processor board but with a single processor installed.
• Advanced Configuration and Power Interface (ACPI) PC
Applies to a single processor motherboard with single processor.
• Compaq SystemPro Multiprocessor or 100% Compatible
Applies to a Compaq SystemPro computer.
• MPS Uniprocessor PC
Applies to non-ACPI computers dual processor motherboard with a single processor installed.
• MPS Multiprocessor PC
Applies to non-ACPI computers with a dual processor running.
• Standard PC
Applies to any Standard PC, non-ACPI, or non-MPS. The CPU may be a 386, a 486, a Pentium, a Pentium II, or a Pentium III.
• Standard PC with C-Step i486
• Other

You want to select the ACPI Multiprocessor PC. That should do the trick for you. Let us know if it does not.
January 5, 2007 5:30:00 PM

Windows rights will affect if a user is able to install drivers, software, and, other certain system functions. But that is not his problem. His problem is the setup portion of windows in not installing the correct HAL. He is getting the standard single processor hal and needs the ACPI Multi-Proc Hal. If he follows my instructions he'll be fine.
January 5, 2007 6:05:37 PM

What we've got here is... failure to communicate. Some men you just can't reach. So you get what we had here last week, which is the way he wants it... well, he gets it. I don't like it any more than you men.
January 6, 2007 4:16:06 AM

-Takes hat off to Rhinofart- :D 
January 6, 2007 3:59:49 PM

i got an amd 3500 that has a manchester core in it,do you guys think it would be possible to enable the second core
January 6, 2007 4:18:53 PM

its something amd does,when they run low on single cores and they have defective dual cores they supposedly use a laser or code to stop the other core from working my sn is ada3500cgbox
January 6, 2007 7:20:34 PM

Are you sure you can't go to:

My Computer
Hardware
Device Manager

+Computer
-Whatever is listed here (mine for example is ACPI Multiprocessor PC) - your should be that

Right click it, select Update Driver.

Click Driver tab, then Update Driver again and Install Automatically.
January 7, 2007 11:49:14 PM

Ok, so i tried to do what Rhinofart said to do but nothing happens when i hit F5 on my keyboard when that screen comes up. My keyboard is a 10 year old HP keyboard but i didnt think that would really matter.. Do i need a new keyboard to be able to boot and press F5 or what?
January 8, 2007 1:03:25 AM

Your chipset is sli 650i. I thought you had to use gforce graphics for video, not ATI 1950 video card. Could this be oversight on everyone's part?? 8O
January 8, 2007 5:01:53 AM

No no no. You press F7 when it tells you to hit F5. F7 F7 F7

F5 will ask you to enter a disk containing Mass Storage Drivers.

F7 is the magic Key.
F7 F7

I think you get the picture.
January 8, 2007 5:05:38 AM

:wink:

That's what I'm here for. To entertain, and enlighten.
January 8, 2007 5:33:45 PM

Rhinofart, Forgive me for sounding stupid, but during the setup of windows xp, when that message comes up to press a key to install raid drivers, i press those keys you said and nothing happens. I've also tried to install a raid driver just to see if it would work and nothing... Is it my 10 year old keyboard that is not letting me press those keys or is it a problem with my mobo? Thanks
January 8, 2007 6:38:54 PM

Give it a shot with a new keyboard first. When you get to that point in the setup and you press F7 (We are talking the keys at the top of the keyboard right F1 - F12 and yes I have seen people try to press F and then the number 7 so I just have to be sure.) You should be brought to a screen that tells you what version of the HAL is currently selected, and give you the list of the other available options. Can you also let us know what version of XP you are trying to install? I'm not 100% sure, but Home Edition may not support Dual CPU's. Anyone here running Home Edition on a Dual Core, or Multi-CPUs??
January 8, 2007 6:47:39 PM

Ok, I'm driving back to school today and i will try a new keyboard tomorrow asap. I have a school copy of windows xp pro with sp2 in it, so I know I have the professional edition. Ill let you know.
January 8, 2007 7:37:12 PM

You are authorized to use that copy I am assume? 8O
!