Clearing cmos on Dell xps L702x

snowman53

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Apr 30, 2017
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Does shorting the pins between rtcr1 and rtcr2 next to the battery able to clear the CMOS on a dell XPS l702x laptop with battery removed?. I know my password. Just wont to reset to factory.
 

mbarnes86

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Sep 16, 2010
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Hi

You need to read the Dell service and user guides or contact Dell technical support

Clearing the CMOS does not clear passwords on business class laptops
It would on most desktop motherboards
Laptops usually store passwords in an eprom chip
(Electronic programed read only memory)

Providing this is a password protecting the bios settings not the one preventing power up, the password can be cleared by a Dell main dealer or Dell themselves provided you can provide proof of ownership

Regards
Mike Barnes
 

Lutfij

Splendid
Moderator
When you remove the battery from the motherboard, the CMOS itself is cleared due to any source of power for time keeping/storing the data when there is no physical power to the system(from the PSU). So you don't need to fiddle with the jumpers.
 

mbarnes86

Distinguished
Sep 16, 2010
245
0
19,110
62
Hi

You need to read the Dell service and user guides or contact Dell technical support

Clearing the CMOS does not clear passwords on business class laptops
It would on most desktop motherboards
Laptops usually store passwords in an eprom chip
(Electronic programed read only memory)

Providing this is a password protecting the bios settings not the one preventing power up, the password can be cleared by a Dell main dealer or Dell themselves provided you can provide proof of ownership

Regards
Mike Barnes
 
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