Message on turning on power The system required a reboot

[Powell42]

“SYSTEM REQUIRES A REBOOT” does not respond to enter or esc. 

[haythamkha]

Hi,

If the screen says “SYSTEM REQUIRES A REBOOT” and the keyboard does not respond to Enter or Esc, I would first treat it as a system/firmware hang rather than a normal Windows issue.

Please try the following:

1. Hold the power button for at least 10–15 seconds until the laptop turns off.
2. Disconnect the AC adapter and all external devices.
3. Perform a power reset:
• Disconnect AC power.
• Hold the power button for about 15–30 seconds.
• Reconnect only the AC adapter.
• Power on again.

HP power reset guide:
https://support.hp.com/us-en/document/ish_1997208-1551050-16

If the same message returns, try accessing HP PC Hardware Diagnostics:

1. Turn the laptop off.
2. Power it on and immediately tap Esc repeatedly.
3. Press F2 for HP PC Hardware Diagnostics.
4. Run a system test.

HP Hardware Diagnostics:
https://support.hp.com/us-en/document/ish_3042094-2941210-16

If this happened during or after a BIOS update, do not keep forcing restarts repeatedly. Try HP BIOS recovery:

https://support.hp.com/us-en/document/ish_3932413-2337994-16

Also test with an external USB keyboard if possible, just to confirm the built-in keyboard is not frozen or failing.

If none of these steps work, please share the exact HP model number and when the message appears: before the HP logo, during BIOS update, or while Windows is loading.

[Powell42]

Thank you very much for your thorough answer.

[haythamkha]

You’re very welcome. I’m glad the information was helpful.

If this answered your question or helped you move forward, please consider marking the reply as Accept as Solution. This can also help other users with the same issue find the answer more easily.

Thanks.