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Update to BIOS caused HDMI Port to stop working

I have the same problems. Today I updated the Bios of my HP probook 650 G1 to version 1.39 from 1.36

After that my DisplayPort is not working anymore. The external VGA port is working fine.

There is no way to downgrade again. Error message at the end of that downgrading process tells me the digital signature is not valid or the image is damaged. So please HP, fix this problem in 1.39 for all users.


Regards, Marco

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