www.hp.com/go/csr

[LucaF-80]

Failure id: 94MUWC-81HA48-MFGJMG-60TK03
PRODUCT ID: J4R92EA#ABZ
HARD DRIVE CAPACITY: 1000 GB
HARD DRIVE: 1

[banhien]

@LucaF-80 

Sadly to say: Most of the time the 24 char disk failure id indicates the HDD is failing and it needs to be replaced.. Is it still under warranty ? If NOT, you have to replace yourself then rebuild your machine.

For Windows 7 and Windows 10. Please use Cloud Recovery tool:

           https://support.hp.com/au-en/document/c06162205

But your machine runs Windows 8.1, you can use the following instructions to rebuild your machine

       https://www.microsoft.com/en-au/software-download/windows8ISO

Regards.

[LucaF-80]

Good morning, thank you. Of course I'll buy a new hard disk. But once I've downloaded the iso8.1 what about the Windows product key? I suppose Windows will ask a valid key before finish installation. Where can I find it? The HD is corrupted. Thank you so much. Regards