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I need help My computer is only seeing one cpu - Page 2

post #11 of 18
Can you please be a bit more informative? What do you mean when you say "my computer only seeing one of them but if i go to device management i see all 4"? That doesn't make any sense. Do you mean the BIOS only sees one CPU? Or if you right-click/properties on My Computer, it only sees one CPU? What? If device manager sees all 4 cores, then what's the problem exactly?
    
CPUMotherboardGraphicsRAM
i5-2500K Biostar TP67B+ XFX HD5750 1GB 2x4GB DDR3 Corsair 1600 
Hard DriveOSMonitorPower
60GB OCZ SSD, 2x160GB HDD RAID0, 500GB+500GB+1.5TB Windows 7 Ultimate 64-bit Samsung SyncMaster 930B Antec SmartPower 450w 
Case
Antec 900 
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CPUMotherboardGraphicsRAM
i5-2500K Biostar TP67B+ XFX HD5750 1GB 2x4GB DDR3 Corsair 1600 
Hard DriveOSMonitorPower
60GB OCZ SSD, 2x160GB HDD RAID0, 500GB+500GB+1.5TB Windows 7 Ultimate 64-bit Samsung SyncMaster 930B Antec SmartPower 450w 
Case
Antec 900 
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post #12 of 18
If you installed your OS on a dual-core cpu then upgraded, you will have to reinstall the OS for Windows to know it needs to install a different HAL (Hardware Abstraction Layer). If it was installed on a dual-core, it won't know how to address the quad.
post #13 of 18
Quote:
Originally Posted by slngsht View Post
If you installed your OS on a dual-core cpu then upgraded, you will have to reinstall the OS for Windows to know it needs to install a different HAL (Hardware Abstraction Layer). If it was installed on a dual-core, it won't know how to address the quad.
Wow, I had no idea it worked like that--very interesting. There's no way for a simple "update" in cases like that?

He says that hardware manager shows all 4 cores (from what I can interpret).

I wonder how many threads taskmanager shows. OP, open up taskmanager and look at how many CPUs it shows in the Performance tab. Are all active if you load up something like a benchmark or app that can use all of them? If it's showing 4 there, and 4 CPU's in device manager, then I wouldn't think there's a problem.
    
CPUMotherboardGraphicsRAM
i5-2500K Biostar TP67B+ XFX HD5750 1GB 2x4GB DDR3 Corsair 1600 
Hard DriveOSMonitorPower
60GB OCZ SSD, 2x160GB HDD RAID0, 500GB+500GB+1.5TB Windows 7 Ultimate 64-bit Samsung SyncMaster 930B Antec SmartPower 450w 
Case
Antec 900 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5-2500K Biostar TP67B+ XFX HD5750 1GB 2x4GB DDR3 Corsair 1600 
Hard DriveOSMonitorPower
60GB OCZ SSD, 2x160GB HDD RAID0, 500GB+500GB+1.5TB Windows 7 Ultimate 64-bit Samsung SyncMaster 930B Antec SmartPower 450w 
Case
Antec 900 
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post #14 of 18
Thread Starter 
its shows 2 cores and i did'nt just install the second cpu it been there my windows cpu and ram score went down too...
post #15 of 18
Thread Starter 


post #16 of 18
Thread Starter 
Quote:
Originally Posted by slngsht View Post
If you installed your OS on a dual-core cpu then upgraded, you will have to reinstall the OS for Windows to know it needs to install a different HAL (Hardware Abstraction Layer). If it was installed on a dual-core, it won't know how to address the quad.
i had it on windows 7 home premium x64 and i now upgraded using a ultimate key i now see 4 cores 2 cpus
post #17 of 18
i think home version only supports 1 physical cpu...
post #18 of 18
Thread Starter 
it was seeing 2 for a while then it stopped
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