low performance when battery is disconnected

Hello,

Thank you for writing to Microsoft Community Forums.

• Who is the manufacturer of the computer?

• When the battery was taken out, was the power plan setting changed?

• What is the current BIOS version running on your computer? If the BIOS is outdated, please get in touch with the computer manufacturer and get the BIOS updated.

Disclaimer:Modifying BIOS/ complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk. 

Since the battery is swollen, I suggest you to get the battery replaced.

There should not be any low performance issue, if the battery is removed from the laptop. I suggest you to the inbuilt troubleshooter for Power and have a check with the issue.

• Press Windows logo key + I to open Settings.

• Select Update & Security.

• Click on Troubleshoot.

• Select Power and run the troubleshooter.

Please check with the Power plan settings from control panel and restore the plan to default settings. If you still face the same issue, I suggest you to create a new power plan, then check with issue.

Follow the steps mentioned below to create a new power plan.

1. Press Windows logo key + R and type control panel, click on OK.

2. Click on Power options.

3. Click on Create a Power plan.

4. Select an option from Balanced, Power saver and High performance, name the plan and click Next to continue.

5. Change the sleep and display setting if needed, and hit Create to finish the task and have a check with the issue.

Hope it helps.

Regards,

Noor Azam S

Microsoft Community – Moderator