Windows 10: cpu stuck at 0.78 ghz when on battery speeds up to 2.67 ghz and slows down to 1.30 ghz.

hello, this is a copy of my old comment "helo" there are some diffrence because my laptop changed > My cpu fan is not working while plugged in so cpu speed is stuck at 0.78 ghz.my computer is 2.30 ghz average speed. max is about 2.70 or more and cpu speed up to 2.70ghz and my cpu fan goes to full speed when on battery, and then slows down to 1.30 ghz or 1.00 ghz. what causes this and how do i fix it? also i think there might be some errors on this comment, Windows 21h2. intel core i5-5300U. i tried to change power plan settings restarted my laptop a few times edited power plan settings max

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Help!!!! CPU operating at only 0.51 GHz

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Look at the Performance tab and at the bottom click Open Resource Monitor, check if you are seeing only 1 core out of the 2, 3 or 4 on the CPU. I get different speeds depending on the core, usually waiting a bit will step through the cores.

 

DPTF is causing my cpu to run at 0.96 ghz after sometime after startup

The problem here is that the CPU speed is not changing when it needs to, being stuck at 0.96 ghz.

i.e., when I run a video game when the bug is active, the CPU speed will remain stuck at 0.96 ghz instead of the usual 2.6 ghz, causing my fps to drop to 10-15 (if I'm lucky), and GPU temps to remain at ~62 degrees, instead of 90.

Furthermore, during normal usage, my CPU speed rarely drops to below 1.5 ghz anyways (because I'm usually always on Google Chrome), and the CPU running at 0.96 ghz has very noticeable effects on just about everything I try to do (loading a webpage can take
up to 30 seconds).

I am aware of modern CPUs slowing down when needed, just that the bug here is causing it to not speed up again when required.

 

My cpu base speed stuck at 0,8 GHz

Hi William. This is what happens when i turn off the speedStep and TurboBoost. The GHz goes down to same speed as the base speed at 0,8 GHz. I dont understand how to base speed can be stuck at 0,8 GHz. Right now its on high performance.