• ×
    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
HP Recommended
Zbook 15u G4
Microsoft Windows 10 (64-bit)

I have a Zbook 15u G4 that with the charger plugged in, the charge light flashes 8 times and then turns off. I have tried a different charger, pulled the battery, pulled the memory, pulled the CMOS battery, held the mute and power button for 30 seconds and it will not boot. I cannot find any info about what the 8 lights blinking means. Any help would be greatly appreciated.

† 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>.