[Pc Portable e-machine] Restauration système

Bonjour,

Je souhaites restaurer la partition Windows de mon pc e machine E625, j'ai pour cela booté sur la partition dédiée et le système m'a proposé 2 types de restauration

Le programme de restauration : eMachines Recovery Management (v. 7.0.5)

E machine 625 :
https://www.emachines.com/selection/

les 2 types de restaurations :

--> Complete Restore System to factory Default
Restore your PC to factory default status. All data on C: drive will be deleted

Ce type de restauration echoue avec le message d'erreur :
Erreur rencontré : Restored failed - Error code = 13 (The data is invalid).

--> Restore Operating System and Retain User Data
Restore only the operationg system of your PC to the defaults.
Files from your user accounts will be transferred to C:\backup.
This option will not remove persistent viruses or malware.

--> Erreur :

No user data has been found on your computer.
Please try Complety Restore System to Factory Defaults instead.

Que dois-je faire ?