Customized Logo Not Displayed in Preboot and Splash Screen
Symantec Endpoint Encryption 12.5HF1
In this case. affected machines had BitLocker encryption enabled.
BitLocker appears to interfere with the display of customized logos during the preboot and splash screen process.
Resolution / Workaround :
Check if BitLocker is enabled on the affected device.
If enabled, disable and remove BitLocker encryption from the device.
Reboot the machine.
Verify if the customized logo now appears correctly in the preboot and splash screens.
If the client machine already have the SEE client installed in that case you need to uninstall the existing SEE client first then you need to install the new client package ( which you have created with the new custom image ).