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The fourth-generation Surface Pro tablet, released October 26th, 2015.

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CMOS battery in SP4

can you remove or unplug the CMOS battery in the SP4? Or is this not possible? thanks

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I ALSO need to reset the UEFI password on my Surface Pro 4 (I never set one in the first place but I have the error and cannot get past it) and cannot find ANY battery on the motherboard. Please help with further information about resetting the UEFI password because I have tried everything else in the article. My Surface is in pieces. I busted the screen attempting to open it but will buy another if someone can actually help me get past the UEFI password error. Your help is much appreciated, thank you!

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i also want to know where is the cmos baterry in surface book

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Is this surface book 1 situation ?

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This machine doesn’t rely on a CMOS battery judging from the teardown. These typically rely on a small reserve capacitor for memory retention with a dedicated line from the battery to power the capacitor to save the CMOS RAM contents. You will need to replace the primary battery or board capacitor.

That being said, the capacitor is usually fine and it’s typically due to a older battery.

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Hello,

This is possible this article also included a guide.

https://www.windowspasswordsrecovery.com...

Your problem isn't about passwords but you have the same goal as the above mentioned article goal of resetting the BIOS if I am not wrong.

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I just followed all of the instructions in this article and have finally torn apart my Surface Pro 4 looking in vain for the CMOS battery. I cannot find one. This article is not legitimate as there is no button cell battery as pictured in this article on the motherboard. If there IS a CMOS battery can you please tell us where it is located?

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