• ×
    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.
HP Recommended
HP EliteDesk 705 G4 Microtower PC RCTO Base Model

After updating bios via network every thing was fine but i change something in bios i think i activate raid then i saw windows blue screen and then i shut down my computer by power button after that i tried to power on and i saw power button is flashing 3 long red lights and then 3 short white  lights

and nothing is shown on screen

i can’t access bios

i tried resetting cmos by removing the battery an clear cmos button 

† 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>.