Frozen Screen upon bootup

I successfully downloaded the CRD iso onto a bootable cd-rw disc. The disc boots up fine from the cd rom drive but alas - I get a ‘green screen’ that freezes up (I can’t get to the CRD main screen interface). What am I doing wrong? I’d sure like to be able to use the scanner. I would greatly appreciate any help or suggestions I can get!
G Ramsey