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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

Risposto! View the answer Anch'io ho questo problema

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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!

da

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

da

Is this surface book 1 situation ?

da

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Kit per Nintendo Switch

A quick fix to get back in the game

Shop Switch Kits

Kit per Nintendo Switch

A quick fix to get back in the game

Shop Switch Kits

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Soluzione Prescelta

This machine doesn’t rely on a CMOS battery judging from the teardown. These devices typically rely on a small reserve capacitor near the Flash ROM or have a dedicated battery line to do the job the CMOS battery would normally be used for.

If you want to get the CMOS RAM to save again, you will either need to find the capacitor(s) that provide power or replace the battery.

That being said, the capacitor is usually fine and it’s typically due to a older battery. However, you may as well double check the board and 100% rule it out.

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I too require help with this, can I simply drain my battery completely and have the bios resetted?

da

Remove it for 24 hours and it will lose any charge it has. Capacitors only hold power short term. Won't work on BIOS passwords but a bad checksum that needs forceful clearing will go be removed.

da

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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?

da

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Ian sarà eternamente grato.
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