As long as UEFI is enabled in BIOS, there should be no problem. Hence, I'd recommend the following, just to make sure, much more after knowing the problem took place after updating the BIOS to 0129:
Restart the system into BIOS by pressing <F2> during the boot process. Once in the BIOS setup utility, press <F9> to restore BIOS default settings. Reset any customized BIOS settings. Clear all DMI event logs by setting the option to "Enable", which is located in the Advanced/Event Log Configuration section of the BIOS Setup utility. Finally, make sure UEFI is enabled under the Boot menu and while at it, see to it that you set the boot device priortiy as you need it. Press <F10> to save the new settings and reboot the system.
If the problem continues, please, I'd like to know what the Altered Assembly Number (AA #) of your Intel(R) Desktop Board DG45FC is (click here for details where this is found) and what the make and model of your TV set (and/or testing monitors) is/are.