Affected Platforms:
- Latitude 3440
- Latitude 5440
- OptiPlex 7410 All-in-One
Affected Operating Systems:
Note: For system board replacement service scenario, the ThinOS Recovery USB Key is dispatched with the replacement system board.
- Insert the Thin OS Recovery USB Key into a USB port of the device.
- Power on the device, press F2 to enter BIOS setup.
Note: The BIOS admin password is Fireport
.
- Go to Boot Configuration and check that Secure Boot is Disabled.
![Check that Secure Boot is disabled](https://supportkb.dell.com/img/ka06P000000TwPzQAK/ka06P000000TwPzQAK_en_US_1.jpeg)
Figure 1: (English Only) Check that Secure Boot is disabled
- Go to Integrated Devices and Enable USB boot support.
![Enable USB boot support](https://supportkb.dell.com/img/ka06P000000TwPzQAK/ka06P000000TwPzQAK_en_US_2.jpeg)
Figure 2: (English Only) Enable USB boot support
- Go to Storage, SATA/NVMe Operations and select ACHI/NVMe.
![Select ACHI/NVMe](https://supportkb.dell.com/img/ka06P000000TwPzQAK/ka06P000000TwPzQAK_en_US_3.jpeg)
Figure 3: (English Only) Select ACHI/NVMe
- Save the settings and Exit.
- When the Thin Client reboots, press F12 to trigger the Boot Menu and select the bootable ThinOS Recovery USB drive and Press Enter.
![Select the bootable Thin OS Recovery USB key](https://supportkb.dell.com/img/ka06P000000TwPzQAK/ka06P000000TwPzQAK_en_US_4.jpeg)
Figure 4: (English Only) Select the bootable Thin operating system Recovery USB drive
- Select OK at the screen below.
![Click OK](https://supportkb.dell.com/img/ka06P000000TwPzQAK/ka06P000000TwPzQAK_en_US_5.jpeg)
Figure 5: (English Only) Click OK
- Once the installation is completed, the EULA screen is displayed. Select Click here to accept all EULA's checkbox and click on Accept.
![Check Click here to accept all EULAs and click Accept](https://supportkb.dell.com/img/ka06P000000TwPzQAK/ka06P000000TwPzQAK_en_US_6.jpeg)
Figure 6: (English Only) Check Click here to accept all EULAs and click Accept
- Click on the next arrow at the Welcome screen.
![Click Next](https://supportkb.dell.com/img/ka06P000000TwPzQAK/ka06P000000TwPzQAK_en_US_7.jpeg)
Figure 7: (English Only) Click Next
- Press Ctrl + Esc to bypass the Out of Box Experience (OOBE) Setup at the Language Selection screen.
![Bypass the OOBE](https://supportkb.dell.com/img/ka06P000000TwPzQAK/ka06P000000TwPzQAK_en_US_8.jpeg)
Figure 8: (English Only) Bypass the OOBE
- At the ThinOS desktop, select the option Reset the system setting to factory default and Shutdown the device.
![Select Reset the system setting to factory default and Shutdown the Thin Client](https://supportkb.dell.com/img/ka06P000000TwPzQAK/ka06P000000TwPzQAK_en_US_9.jpeg)
Figure 9: (English Only) Select Reset the system setting to factory default and Shutdown the device