Windows 10: My pc not showing 2 cores

A few days ago I enabled my another core just to see if there's any performance boost and yeah it was right. But my friend told me it would make the cores dead so I changed back to 1 core. I did some searched on that and found it was not true. I tried enabling cores again but this time it wont show me cores now. Only 1 core option and nothing. Can anyone please help me with it? Thanks..

:)

 

True core and memory clock on my GFX...what should I trust?

i have the list of nvidia core and shader steppings if you like, it shows the requested clockspeed versus the effective clockspeed.

 

core unparking

I have a I5 7600 4 core cpu everything in the system is show 4 cores but there parked, I have the software for unparking them but when I use that it only shows 2 cores and that they are unparked but in the task window in performance it show all 4 cores
and that they are parked? so I'm not sure which is right and which is wrong since the program to unpark the cores is only showing 2 cores and not seeing the other 2 cores, but in the registry which is where it's looking all 4 cores are listed there. So my
main question then is there a place in the registry that you can change the cores to unpark them?

 

Overclocking / Undervolting guide for Vega 56 or 64?

Here's a quick laundry list:

List of software to use for overclocking and testing
Examples:
Wattman (and how to find and use it, like an overview, including profiles)
Unigine Valley or Heaven (use this for quick testing while changing settings in Wattman and checking for stability / artifacts) ...just suggesting this
How to monitor cores / mem speeds and temps during testing (I've seen screen overlays, and others using GPUz)

Step-by step overclocking in Wattman
Fan speeds
Power limit
Temp limit
Voltages
Core speeds
Memory speeds