[SOLVED] AMD Ryzen 3500 showing only 5 cores in windows

[Conqu3rer]

I recently upgraded my 1300X to a 3500. I have not re-installed windows.

My AMD Ryzen 3500 ordered 4 days ago is showing me 5 cores / 5 Threads in Windows, Device Manager and Task Manager. But in the BIOS it shows 6 cores are active, and even in Ryzen Master, it shows 6 cores. Not sure what the issue is.

Motherboard: Asus B450-A Prime
RAM: 16 GB (2x8GB DDR43000)
BIOS: Latest version 2006

Things I've tried:
1) Device manager: Uninstall the processor and the hidden devices

2) BIOS Reset

3) Ryzen Master reset

 

[toniplavna]

Did you check msconfig -> boot tab -> advanced options -> number of processors? (it should be unchecked)

task manager, how many logical cores does it show? 5 or 6?

Go to control panel and your system's power settings and change it to high performance

Reset CMOS

Fresh install of windows

 

[Conqu3rer]

Checked msconfig - shows 5 processors
Task Manager - shows 5 cores

 

[norcalsc]

Where did you get that chip

 

[throwawayaccnt]

Where did you get that chip

I have this same questions lol

 

[Conqu3rer]

Problem solved, I RMA'd it. Got a new one as replacement. Same processor. All 6 cores working properly now.