MSconfig can only see 1 processor on a quad core

Hi Hellouglys and welcome to Windows 7 Forums :party:

Uncheck the option Number of processors: There could also be an option in your BIOS to prevent your system from using all cores. Both these options are only for diagnostic purposes. Normally, you want all cores to be used.
 

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Windows 8.1 Pro RTM x64Intel Core-i5-3570K 4-core @ 3.4GHz (Ivy Brid...4 x 4GB DDR3-1600 Corsair Vengeance CMZ8GX3M2...MSI GeForce GTX770 Gaming OC 2GB
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dwarf Dwf/11/2012 r09/2013
OS
Windows 8.1 Pro RTM x64
CPU
Intel Core-i5-3570K 4-core @ 3.4GHz (Ivy Bridge) (OC 4.4GHz)
Motherboard
ASRock Z77 Extreme4-M
Memory
4 x 4GB DDR3-1600 Corsair Vengeance CMZ8GX3M2A1600C9B (16GB)
Graphics Card(s)
MSI GeForce GTX770 Gaming OC 2GB
Sound Card
Realtek High Definition on board solution (ALC 898)
Monitor(s) Displays
ViewSonic VA1912w Widescreen (VGA)
Screen Resolution
1440x900
Hard Drives
OCZ Agility 3 SSD 120GB SATA III x2 (RAID 0)
Samsung HD501LJ 500GB SATA II x2
Hitachi HDS721010CLA332 1TB SATA II
Iomega 1.5TB Ext USB 2.0
WD 2.0TB Ext USB 3.0
PSU
XFX Pro Series 850W Semi-Modular
Case
Gigabyte IF233
Cooling
1 x 120mm Front Inlet 1 x 120mm Rear Exhaust
Keyboard
Microsoft Comfort Curve Keyboard 3000 (USB)
Mouse
Microsoft Comfort Mouse 3000 for Business (USB)
Internet Speed
NetGear DG834Gv3 ADSL Modem/Router (Ethernet) ~4.0 Mb/s (O2)
Antivirus
Avast! 8.0.1497
Browser
IE 11
Other Info
Optical Drive: HL-DT-ST BD-RE BH10LS30 SATA Bluray
Lexmark S305 Printer/Scanner/Copier (USB)
WEI Score: 8.1/8.1/8.5/8.5/8.25
Asus Eee PC 1011PX Netbook (Windows 7 x86 Starter)
Hi Hellouglys and welcome to Windows 7 Forums :party:

Uncheck the option Number of processors: There could also be an option in your BIOS to prevent your system from using all cores. Both these options are only for diagnostic purposes. Normally, you want all cores to be used.

hey im a little new to this site so dont really know how to reply hope this works though but anyways yea i see 4 cores now and i can select 4 to boot. Thanks dude but why did it happen in the first place?? also if u dont mind can u add me on msn so i can msg u whenever? lol
 

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Windows 7 Home Premium 64bitAMD Athlon II X4 6354 GB
Computer Manufacturer/Model Number
HP Pavilion p600 Series
OS
Windows 7 Home Premium 64bit
CPU
AMD Athlon II X4 635
Memory
4 GB
the normal setting is for the box to be unticked. this will enable all your cores.

only tick the box if you wish to limit the number of cores used for whatever reason.
 

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ultimate 64 sp1i5 2500K [email protected]8 gigs GSkill Ripjaws 1600amd hd6950
Computer Manufacturer/Model Number
mickey megabyte 1234
OS
ultimate 64 sp1
CPU
i5 2500K [email protected]
Motherboard
MSI P67A-GD53
Memory
8 gigs GSkill Ripjaws 1600
Graphics Card(s)
amd hd6950
Sound Card
creative x-fi gamer
Monitor(s) Displays
samsung 24"
Screen Resolution
1920x1080
Hard Drives
ocz vertex 2e 60 gig, samsung f3 1tb, buffalo 2tb ext
PSU
antec 550
Case
antec three hundred
Cooling
i'm a cooling fan
Keyboard
saitek eclipse ii
Mouse
logitech g3
Internet Speed
about 4 Mbps
Other Info
i love win7
Thanx.

THANK U VERY MUCH FOR HELP,I SOLVED MY ISSUE BY USING YOUR GUIDE.
I am glad for this solution,it worked perfectly & Windows is healthy & running both cores again.
Interesting is,missguide to check that option to "increase boot speed" is present also in some books about Windows,f.e.in book 333 Tips for Windows it was advised by author to check that option,many so called experts mislead users that way & profaning this myth,thus this is 1 of the strongest myths about Windows,thank U for fixing it & help bust this dangerous myth.
 
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Windows 7 Home Premium 32bit.Intel Atom 2x1.6GHz.2GB DDR2.VGA.
Computer type
Laptop
Computer Manufacturer/Model Number
HP Compaq Mini.
OS
Windows 7 Home Premium 32bit.
CPU
Intel Atom 2x1.6GHz.
Memory
2GB DDR2.
Graphics Card(s)
VGA.
Monitor(s) Displays
Internal 10" 16:9,PnP LCD;External 19" Samsung SyncMaster 94
Hard Drives
Internal:
SATA Samsung Spinpoint 2.5",9.5mm,2TB.
External:
All 2.5":
160GB USB 2.
500GB USB 2 Verbatim.
1TB USB 3 Verbatim.
2TB USB 3 Western Digital My Passport.
All 5 disks formatted as MBR,NTFS,cluster size 512B.
Cooling
Active.
Keyboard
Internal+external numeric-only,USB.
Mouse
USB,optical with green light-Connect IT CI-78 "Battle Mouse"
Antivirus
Panda Dome Free.
Browser
Firefox,Opera,Netscape,IE,Chrome(order by usage frequency).
Other Info
Have some other laptops,but these has another Windows,some of them dedicated to collecting old Windows versions-mainly Win16 & Win32 DOS-based including DOS itself,& oldest NT below 5.0,waiting for NT 5.1 & 6 to become abandonware too to extend my collection,my newer OSes was bought with its computers(OEM),including my Windows 7,these in collection r abandonware for non-profit museum,heritage & co
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