Only one of my four cores on my i5-2500k is being used...

Hi i am Chris, i am somewhat new to computers and i'm having a bit of troubling with my CPU ,which is an i5-2500k, it is running but it isn't using all four of the cores. I verified this with CPUID, advanced boot options and the task manager graphs they all say my CPU has 1 core. Is there a way that i can unlock the other 3 cores?


Look at that core speed does that mean something is wrong... it's like twice the amount of average right?
5 answers Last reply
More about cores 2500k
  1. Run>msconfig>Boot>Advanced Boot Options>Number of Processors>Uncheck the box.
  2. elemein said:
    Run>msconfig>Boot>Advanced Boot Options>Number of Processors>Uncheck the box.


    I tired that but when i restart and go to the advanced boot up menu it re-checks itself.
    And i did click apply and ok
  3. Did you run it as an administrator?
  4. O no i did not :P ill try again.
  5. Lol i was being done i actually never was pushing the apply and ok :P
    Thanks for the help everyone!
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