• ×
    Information
    Need Windows 11 help?
    Check documents on compatibility, FAQs, upgrade information and available fixes.
    Windows 11 Support Center.
  • post a message
  • ×
    Information
    Need Windows 11 help?
    Check documents on compatibility, FAQs, upgrade information and available fixes.
    Windows 11 Support Center.
  • post a message
Guidelines
Experiencing 'Printer Blocked' or 'Printer Error' message? Click here for more information.
Check some of the most frequent questions about Instant Ink: HP INSTANT INK, HP+ PLANS: INK AND TONER.


Check out our Black or Color Ink Not Printing, Other Print Quality Issues info about: Print quality and Cartridge Issues.
Locked

‎10-17-2024 05:31 AM

HP Recommended
Product: HP LaserJet 2420DN
Operating System: Microsoft Windows 7 (64-bit)

Hello,

 

I have a HP LaserJet 2420DN Printer.
While I was upgrading firmware by serial port using the file: lj2420_fw_util_08_120_4.exe
The printer LCD start count from 0% up to 100%
Then show a message. 'POWER CYCLE'

After that, the printer not working. When I power the printer on:
1) The printer LCD is not lighting or displaying anything.
2) Three LEDs (Ready, Data, Attention) are not lighting anymore.
3) When the power switch is turned on, the sound of motors and cartages works for about 3 seconds.
4) Computer not detect a printer.

 

How can I fix it, and printer return to working?

 

Thank you

Warning
Be alert for scammers posting fake support phone numbers and/or email addresses on the community.
If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation.
Didn't find what you were looking for? Ask the community
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the <a href="https://www8.hp.com/us/en/terms-of-use.html" class="udrlinesmall">Terms of Use</a> and <a href="/t5/custom/page/page-id/hp.rulespage" class="udrlinesmall"> Rules of Participation</a>.