Many users have been asking us How to Fix Harsh Sound on Laptop after Switching from Mains to Battery Power and here we have addressed it.

When switching from mains power to battery on your laptop, the computer's sound is likely to be raised to a very loud level that is quite annoying.


Here's a breakdown of the provided fixes for a harsh sound in a Windows laptop after switching from mains to battery power, along with some additional insights:

How to Fix Harsh sound in laptop after switching from Mains to Battery power
Provided Fixes:



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Connect another charger: This helps isolate the issue. If the sound disappears with a different charger, the original charger might be faulty.

Disable Fast Startup: Fast Startup can sometimes cause conflicts when switching power modes. Here's how to disable it:

Search for "Control Panel" and open it.
Click "Hardware and Sound" and then "Power Options."
Click "Choose what the power buttons do."
Click "Change settings that are currently unavailable."
Uncheck "Turn on fast startup (recommended)" and click "Save changes."
Run Power Troubleshooter: Windows has a built-in troubleshooter that can diagnose and fix common power-related issues, potentially including unexpected sounds. Here's how to run it:

Go to Settings > System > Troubleshoot.
Click "Additional troubleshooters."
Find and run the "Power" troubleshooter.
Change your power plan:  Power plans can affect fan behavior.  Try switching to a "Balanced" plan that prioritizes a balance between performance and battery life. This might help regulate fan speed and reduce noise on battery power.

Contact support:  If none of these solutions work,  consider contacting your laptop manufacturer's support for further assistance. They can provide more specific troubleshooting steps or diagnose potential hardware problems.

Additional Considerations:


  • Coil Whine: As mentioned earlier, coil whine is a high-pitched noise from electrical components and might be more noticeable on battery power due to changes in power delivery. While not necessarily a cause for concern, it's something to be aware of.
  • Fan Noise: Monitor your laptop's temperature using software like HWMonitor (https://www.tomshardware.com/how-to/how-to-check-cpu-temp-temperature). High temperatures can indicate a cooling issue and might require cleaning dust from vents (consult your user manual for proper cleaning procedures) or replacing thermal paste (advanced users only).
By following these tips and the provided fixes, you should be able to diagnose and potentially fix the harsh sound on your laptop. If the issue seems hardware-related, don't hesitate to seek professional help from your laptop manufacturer's support.

So we come to the end of our article on How to fix harsh sound on laptop after switching from mains to battery power and now that we are done we hope that our guide has been of as much help as possible.


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