No operating system.

LindainTexas · ‎05-22-2026

My operating system is stored on an external D drive. When I shut the computer off and turned it back on, now says no system found

Deep_World · ‎07-11-2026

Hi @LindainTexas

Welcome to the HP Support Community!

Thanks for reaching out!

I understand on how it must feel to see a “No OS found” message, I see that you mentioned operating system is stored on an external drive.

Could you kindlt share the exact HP model of your computer?

Also kindly confirm the below details :

Was the external D drive connected via USB or another interface when you restarted?
Do you hear or see the drive spinning/lighting up when the system powers on?
Is the external drive detected in the BIOS/UEFI setup menu at startup?

And here are few steps you can try :

Check BIOS boot order: Restart your PC, press Esc/F10/F2 (depending on your model), and confirm the external drive is listed as the first boot device.
Test with another PC: Connect the external drive to a different computer to confirm if the OS partition is still accessible.

I hope this helps.

I'm an HP Employee.

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