• ×
    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
Are you having HotKey issues? Click here for tips and tricks.
Locked

‎03-15-2024 11:13 AM

HP Recommended
Product: z420 Workstation
Operating System: Microsoft Windows 11

Hello! I'm facing an unpleasant problem: the CPU fan has gone crazy. It's an HP Z420 WorkStation with an LGA-2011 motherboard. The system stopped booting, but I could access the BIOS. I tried resetting to default settings, but it didn't change anything. I attempted to lower the fan speed in the settings, but it doesn't respond... the fan spins so fast that it seems like it's trying to leave the planet. I removed the battery and cleared the CMOS, but it didn't help... I took out the graphics card - no effect. When I put it back in, the monitor lost its display, and the fan continued to spin wildly... I tried unplugging its connector, but the system won't start. A red LED blinks, accompanied by an audio signal. Initially, it blinks 8 times, then pauses, and then it beeps 16 times. Then there's another pause, and the fan attempts to take off again..

Now the system doesn't boot at all. Just a black screen, beeping, a red LED, and the fan spinning at high speed. Thank you for your assistance!

Category:
1 person had the same question
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>.