Acer Swift 3 SF314-43 cpu stuck at 0.4GHZ suddenly started performing really slowly

JJ44
JJ44 Member Posts: 3 New User
edited October 2023 in Swift and Spin Series

A few days ago my sons laptop suddenly started performing really slowly…unusable when typing etc.

Its a Swift 3 SF314-43 with AMD Ryzen 5 5500OU processor, 8GB RAM running Windows 11 Home edition.

On closer inspection, the CPU is operating at 0.4GHz nothing seems to make a difference. this is what we've tried.

Updated windows to latest build.

Updated the BIOS to latest version 1.08 (when updating fan ran very fast…so its not the cpu throttling because the fan isn't working.

Updated chipset to latest version.

Tried CMOS battery reset.

Disconnected the battery, it ran the same when using mains power.

Altered UEFI and booted to Linux on flash drive - CPU's ran at 1.4GHz. So the CPU's can run faster.

I'm now clutching at straws and trying the Windows insider programme, although not holding out much hope!

Anyone got any ideas, what I've missed (apart from reimage and use Linux)

Thanks

[Edited the thread to add issue detail]

Answers

  • billsey
    billsey ACE Posts: 34,912 Trailblazer

    Look in power options, especially in the advanced mode for CPU settings. It's likely confused and thinking you are almost out of battery, so dropping back to low power mode.

    Click on "Like" if you find my answer useful or click on "Yes" if it answers your question.
  • eGomes
    eGomes Member Posts: 4,733 Guru
    edited October 2023

    Two other possibilities:

    • Damaged DC jack connector (or center pin);
    • Faulty charger.

  • JJ44
    JJ44 Member Posts: 3 New User

    Hi eGomes,

    Unfortunately it runs at exactly the same GHz whether the charger is plugged in or not…battery is charging whilst plugged in.

    😕

  • JJ44
    JJ44 Member Posts: 3 New User

    I thought that might be the case. But it didn't make any difference to being stuck at 0.4GHz CPU

  • eGomes
    eGomes Member Posts: 4,733 Guru

    Test your laptop power supply with the help of a multimeter.

    If possible, test with another DC charger!

  • Hello! Did you check the temperatures too?

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