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Let's try to reset the Printer here as it helps in removing any stored static electricity from the Printer which might be causing these issues.
- Turn the printer on, if it is not already on.
- Wait until the printer is idle and silent before you continue.
- With the printer turned on, disconnect the power cord from the rear of the printer.
- Unplug the power cord from the wall outlet.
- Wait at least 60 seconds.
- Plug the power cord back into the wall outlet.
- NOTE: HP recommends connecting the printer power cord directly to the wall outlet.
- Reconnect the power cord to the rear of the printer.
- Turn on the printer, if it does not automatically turn on.
- Wait until the printer is idle and silent before you proceed.
If the issue persists, please perform the remaining steps from this document: https://support.hp.com/us-en/product/hp-officejet-pro-8600-e-all-in-one-printer-series-n911/4322914/model/4323658/document/c03253201 and https://support.hp.com/us-en/product/hp-officejet-pro-8600-e-all-in-one-printer-series-n911/4322914/model/4323658/document/c03096304
Let me know if this helps.
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