make sure you have the latest BIOS for your motherboard installed
How can I check that ..?
What does it show on the performance tab of your Task Manager?
Like this:
It shows 2 cores and 2 logical processor...
Using the older version of windows 10, 2004 is different
i installed my windows just 1 week ago..!
Can you give me link to download latest bios for my motherboard..?
find the make and model of motherboard and search for it with google
Go into your bios and reset it to defaults and see if that helps. If not you need to know what model board you have. If you don't know often it shows at boot on some. It will be printed on the board itself somewhere. If you have your manual it will be there.
You can use a utility such as CPU_Z from CPUID dot com, run it and it will list your board model.
Then go to your motherboard manufacturers site and find your board and there will be a download and or support page that should take you to bios options.
Also did you load the latest chipset driver from AMD for your board when you reloaded Windows?
Same thing you need to know what chipset and or socket you have. In your case likely AM3+ but not sure what chipset you have. CPU_Z should tell you this too.
The chipset software can be also be downloaded from your motherboard manufacturer but it may not be the latest as often the OEM's don't do a good job of updating downloads for legacy products.
You can download the chipset driver from AMD from this page once you know what chipset you have: https://www.amd.com/en/support https://www.amd.com/en/support
What does CPU-Z show? The same thing or different?