Summary
Reinstall the operating system if task manager is not showing the right amount of processor cores.
Description
After replacing a quad-core Intel® Core™ i3-8100 Processor with a six-core Intel® Core™ i5-9400F Processor, the number of cores reported in task manager is still four, but shows as six in the BIOS (Basic Input/Output System).
Resolution
Try the following tips:
- Refer to Why Does my System Have Fewer or Missing Cores?
- Try to reinstall the operating system.