Intel® NUCs include a default splash screen image that displays during startup:

You can change the splash screen to the image of your choice using one of the available command-line tools:
.
Click or the topic for details:
Image file requirements
Using an image editing software, create a custom splash screen image in .JPG format. Some image editing programs can produce an incompatible image, which won't successfully upload to the Intel NUC. A best known method to fix this issue is to open the image file with Microsoft Paint* and save it.
Image file requirements:
- Must be .JPG file type
- Maximum file size: 60 KB
- Minimum resolution: 120 x 120 pixels
- Maximum resolution: 1920 x 1080 pixels
If you use Intel Integrator Toolkit
Create the custom BIOS update file with the new image
- Download and unzip the Intel® Integrator Toolkit to a USB device.
- Copy the .JPG file you created for your logo to the USB device.
- Connect the USB device to the target Intel NUC.
- Enable the Internal UEFI Shell:
- Press F2 during start to enter BIOS setup.
- Go to Advanced > Boot > Secure Boot.
- Disable Secure Boot, if enabled.
- Go to Advanced > Boot > Boot Configuration.
- In the Boot Devices pane, enable Internal UEFI Shell.
- Press F10 to save changes and exit BIOS Setup.
- The computer will restart into the EFI Shell. You will see a drive mapping list:
- Depending on how many devices are connected to the computer, the FS number that corresponds to the USB flash drive can vary.
- Generally, the first FS number corresponds to the USB flash drive.
- If you need to view the drive mapping again, type DIR and press Enter.
- Change the USB drive by entering the command FSX: where X is the drive number of the USB flash drive from the device list. (Example: if the USB device is FS0, type FS0: and press enter).
- Type ITK6.efi -b -x myCustomBio.bio -il myLogo.jpg and press Enter.
Where:
myCustomBio.bio is the name of the BIOS update package file that will be created.
myLogo.jpg is the name of the logo file you created.
- Type Exit and press Enter to close the EFI Shell. The custom BIOS package is saved in the same folder on the USB device as the Integrator Toolkit.
- Restart the computer and set the BIOS back to original settings:
- Press F2 during start to enter BIOS setup.
- Go to Advanced > Boot > Boot Configuration.
- In the Boot Devices pane, disable Internal UEFI Shell.
- Go to Advanced > Boot > Secure Boot.
- Change Secure Boot back to its original setting.
- Press F10 to save changes and exit BIOS Setup.
Update BIOS to install the new image
- Connect the USB device to the target computer and turn it on.
- During boot, when the F7 prompt is displayed, press F7 to enter the BIOS Flash Update tool.
- Select the USB device and press Enter.
- Select the myCustomBio.bio file and press Enter.
- Press Enter to confirm that you want to update the BIOS with the custom BIOS file.
- The computer restarts and displays the following message.
A request to configure the motherboard BIOS was made by software running on this system. If you did not request this operation, it is likely a system attack. You should not allow it. Press <1> to reject, or <9> to allow.
- Press 9 to continue.
- When the update finishes, the computer restarts and the new logo displays during start.
If you use Intel VCUST Tool
- Download and unzip the Intel VCUST Tool to a folder on the Intel NUC. (Contact Intel® Customer Support to get a link to download the Intel® NUC VCUST Tool.)
- Copy the .JPG file of the logo to that same folder.
- Open the Command Prompt as an administrator:
- Type CMD in the search box next to the Windows icon in the bottom left corner of the screen.
- Right-click on the Command Prompt, and then click Run as administrator.
- Navigate to the folder using the CD command.
- Enter the command VCUSTW64 -LOGO=logo.jpg (where logo.jpg is the file name of the logo you created)
- The computer will reboot and the following message will be displayed:
A request to configure the motherboard BIOS was made by software running on this system. If you did not request
this operation, it is likely a system attack. You should not allow it.
Press <1> to reject, or <9> to allow.
- Press 9 to continue. When the update finishes, the new logo displays during startup.