Live CD password on Mac book Pro

Need help!) Recently downloaded Ubuntu Budgie Live CD in order to try it on my Mac book Pro mid 2010. When loading first option “Try Ubuntu” getting on to lock screen where I need to input login and password, which I obviously don’t know. Any help on this is very much appreciated.

When you see this it means the iso downloaded was corrupted or that the writing to the Usb stick failed.

Do check the md5sum of the download iso matches with the published value shown on the download site.

Also try other usb sticks and you should try a recommend usb writer such as etcher