Fedora 20 Live stick install fails

Fri Jan 3 23:00:09 UTC 2014

I am trying to run a Fedora 20 Live stick on my system and the
graphics is failing, probably due to my NVidia graphics card. I can
get it to boot into single user mode but then I don't know what
file(s) to modify to get into a "safe" graphics mode. I am hoping for
a pointer to more recent docs than I have been able to find. Thank you
for your assistance.
NVidia GE Force 240
ASUS 64 bit system.

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Patricia Wilson
Apache Junction, AZ