Windows 10: CPU limited to 28%

Hi, I have a Dell XPS 9560 with an i7 7th gen quad core clocked at 2.8 GHz


My computer has been slower lately and I discovered this morning in the Performance tab in the Task Manager that the CPU shows at 0.78 GHz and max out at 28%. (which kind of makes sense since 0.78/2.80GHz=28%)


I went to the BIOS to reset it to factory defaults and it didn't change a thing.


I read that it can happen when the computer is unpluged or is using a "jobber" power adapter but I am using my OEM adapter.


I also tested with Intel diagnostic tool and every tests passes. I don't feel it's an hardware issue....


Is there a setting somewhere in Windows that could limit CPU usage?





:)

 

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

 

[FS][US] CPU, NForce4 skt 754 motherboard (with PCI-express slot, rare!), DDR RAM

bump, CPU's stepping is now listed.

 

INCORRECT CPU FREQUENCY READING

Hello Muhammad,

CPU usage depends on the applications that are open to your device. To isolate the problem, we suggest that you answer the following questions:

• Can you include a screenshot of the CPU reading?
• Have you tried performing a
  clean boot to eliminate software conflicts?
• What troubleshooting steps have you done so far?

Looking forward to your response.