CFR

720-18ICB Desktop (ideacentre) - Type 90HT

La liste du matériel est à cette adresse Parts Lenovo
La mémoire est de la DDR4 2666 UDIMM SM30K25317 Photo de la mémoire
La même version est disponible sur AMAZON de la marque Crucial CT4G4DFS6266, ASIN : B07K8ZHX6D.

Il est possible de rajouter un disque dur SATA 3,5"
Disponible sur AMAZON, marque Seagate Barracuda ST1000DMZ10, ASIN B07D99KFPK

Problème de maj 1709 vers 21H2

    Disable (preferrably uninstall) your Antivirus utility before attempting the upgrade.
    Restart a few times and try again.
    Disable General USB Devices (example - Smart Card Reader). 
    If you are using a SCSI hard disk, make sure you have drivers available for your storage device on a thumdrive and it is connected. During Windows 10 setup, click the Custom Advanced Option and use the Load Driver command to load the appropriate driver for the SCSI drive. If this does not work and setup still fails, consider switching to a IDE based hard disk.
    Do a clean boot and try again.
    If you are upgrading using the .ISO file, disconnect from the Internet during setup, if you are connected by LAN (Ethernet) or Wi-Fi, disable both and attempt setup again. 
    If you are updating through Windows Update, when the download reaches 100% disconnect from the Internet LAN (Ethernet) or Wi-Fi and proceed with the installation.
    If that does not work, try using the .ISO file to upgrade if possible.
    If you are connected to a domain, switch to a local account
    If you have any external devices attached to the machine, disconnect them (example, gaming controllers, USB keys, external hard disc, printers, non-essential devices).

    If you are installing Windows 10 using Windows Update, try the following:
    1. Press Windows Key + X on the keyboard and then select “Command Prompt (Admin)” from the menu.
    2. Stop the BITS, Cryptographic, MSI Installer and the Windows Update Services. To do this, type the following commands at a command prompt. Press the “ENTER” key after you type each command.
                               net stop wuauserv
                               net stop cryptSvc
                               net stop bits
                               net stop msiserver
    3. Now rename the SoftwareDistribution and Catroot2 folder. You can do this by typing the following commands in the Command Prompt. Press the “ENTER” key after you type each command.
                              ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
                              ren C:\Windows\System32\catroot2 Catroot2.old
    4. Now, let’s restart the BITS, Cryptographic, MSI Installer and the Windows Update Services. Typethe following commands in the Command Prompt for this. Press the ENTER key after you type each command.
                            net start wuauserv
                            net start cryptSvc
                            net start bits
                            net start msiserver
    5. Type Exit in the Command Prompt to close it and then restart the computer.