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Unfortunately, in the documentation provided by HP, there is no meaning for the lights when such a problem occurs. There are also no beeps or other ways of diagnosing this type of problem.
Based on the behavior you mentioned, I'm afraid it may be a problem with the BIOS or the motherboard. I suggest you consult a technician you trust or the manufacturer's authorized support.
You can check the documentation provided by HP at the link below.
https://support.hp.com/us-en/product/setup-user...
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