[SOLVED] why does my 8 core processor only show up as 1 core?

Mar 8, 2020
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I have a ryzen 7 2700 8 core processor but it only shows up as one core in the task manager. I have also tried msconfig but it also shows up as 1 and there is no dropdown to change the cores. I have also went to my bios and set the SMT option to auto (there is no enabled). Other third party apps like core temp and cpu z also show i have 1 core and thread. How do i fix this problem?
 

boju

Titan
Ambassador
Did you recently upgrade to the 2700 on the same Windows install? If Number of processors check box is ticked in msconfig > boot, try unticking it and reboot. If you did upgrade cpu, sometimes Windows limits the cores by checking number of processors itself.
 

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