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For some reason only 4 cores are showing up in task manager I have tried everything(almost)

  • setting and unchecking number of cores in msconfig did not work
  • using easy BCD did not work
  • reinstalling OS on fresh partition did not work.
  • setting number of cores on BIOS did not work

I dont know what to do

system specs: AMD FX 8150 eight core processor os windows 8 enterprise

cpuz specs

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Get a copy of CPU-z and please post a screenshot confirming that you do actually have that model of processor. – Mokubai Jun 5 '13 at 21:45
cpuz specs – Kik Bm Jun 5 '13 at 22:04
Check here.… – francisswest Jun 5 '13 at 22:04
@KikBm Try right-clicking on the CPU graph and selecting "Change graph to logical processors". – Louis Jun 5 '13 at 22:11
Louis, shouldn't that be the answer? Because currently you posted it as comment but I would suggest it as right answer to the question – Daniel Ruf Aug 28 '13 at 15:49
up vote 1 down vote accepted

You need to enable graphing of logical processors. Right click CPU, and choose "Change Graph to > Logical Processors". This should allow you to see all 8 cores (This is the process I took to see all cores on my similar AMD chip, so it should work for you).

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