one core out of four

Forum discussion tagged with one core out of four.
  1. M

    Question my i5 3rd generation, displays single core in device manager/task manager

    I have just got my PC motherboard replaced with Intel DH61CR. The PC was working really slow at first I thought its windows issue, but after re-installing the windows it is just the same. After checking the Task manager, the CPU usage percentage is really high 100% most of the time and its only...