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Hello!

Notebook: hp 17-cp1797nr.

BIOS and drivers last.

We've had the laptop for a few weeks now and periodically I noticed it running extremely slow. In Task Manager I found that the clock speed said that it was running at 0.38ghz.

I've been able to reliably reproduce how this happens...

1. Plug in the power cable.

2. Put the laptop into sleep or hibernate.

3. Unplug the power cable.

4. Turn back on and it will be locked at a maximum speed of 0.38ghz.

5. If I plug the power cord back in, it bounces back to normal speed. Also if I reboot (without plugging in) it clears up.

 

I've looked in the advanced Power Options for the CPU and verified that maximum CPU is configured to 100% on both battery and when plugged in.

 

I've also noticed that the CPU speed will throttle way down when I unplug the power while the laptop is on but then bounces back quickly. It seems that if this happens while it is sleeping then it won't throttle back up again.

 

Any suggestions on how to resolve this?

 

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