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CPU stuck on low freq while unplugged

Just got myself an ASUS Vivobook X540MA, and the CPU (Celeron N4000) is giving me some trouble. When the laptop is plugged in, it behaves like normal and boosts up to 2.5 Ghz, and the machine's performance is ok. However, when I unplug the laptop, the CPU clock speed instantly drops to 0.79 Ghz (as reported by TM) and stays frozen, and therefore, the laptop becomes barely usable. Tried updating the BIOS, changed the power plan - nothing helped. Any tips? thanks in advance!

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1 hour ago, unihero said:

Any tips?

almost every laptop will power limit the components when it's on battery

to prolong battery life and battery health

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That's fair, but do you reckon there's a way to give the CPU a bit more juice when it's unplugged? Because otherwise this thing is unusable unless plugged in...

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@unihero On laptops, Windows 10 usually hides the High Performance power plan. To access this, open a command window and type in this command.


powercfg /s SCHEME_MIN


To go back to the Balanced power profile type in this.



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@unclewebb I do actually have the High Performace plan on! Does nothing, unfortunately, and from what I've managed to dig up myself, I started to think that this limitation is probably baked into the CPU and that there's nothing in Windows or BIOS that I can do. :(

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