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- HP Community
- Notebooks
- Notebook Boot and Lockup
- CMOS checksum error -(502)

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10-06-2019 01:40 AM
MY LAPTOP SHOWED ME THE CMOS CHECKSUM ERROR PAGE ON STARTUP AND AFTER 15 SECONDS THE SCREEN TURNED OFF AND THE POWER BUTTON LED STARTED BLINKING.
NOW WHENEVER I PRESS POWER BUTTON TO TURN ON THE LAPTOP THE SCREEN REMAINS OFF AND POWER BUTTON STARTS BLINKING.
10-08-2019 01:51 PM
@--FreakLee--
Thank you for posting on the HP Support Community.
I would request you to reach out to our Support and our Support Engineers should be able to check the available service options in order to diagnose the computer physically. HP Support can be reached by clicking on the following link: www.hp.com/contacthp/
Please feel free to contact us here anytime you need any further assistance. Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
ECHO_LAKE
I am an HP Employee