Hello
jmgdotcom@hotmail.com CSM initialization is found on the boot tab in the bios, check to see what it's set to.
The options are:
Auto - self explanatory
Enabled - This allows you to manually set priorities for different types of devices eg "UEFI first" means that if both are available the UEFI driver will be chosen.
Disabled - This disables CSM entirely with all its functions and runs in UEFI-only mode, this option boots alot faster because it doesn't load or wait for any legacy components. If your graphics card and other expansion cards fully support UEFI, you can disable CSM.
Have you tried a clear CMOS?
List your pc specs for us please.