"authentication failure" in bootcd?

[droidman]

i just burned the dvd to test backbox, i never used it before so... after burning the iso i started my laptop, all i get is:

Authentication failure

Authentication failure

Authentication failure

Authentication failure

Authentication failure

it gives me this error like 6 to 8 times, after that i press ctrl+alt+del and it asks me to remove the cd press enter and it restarts my laptop.

and that's it... not even the livcd works? what am i doing wrong ?

[droidman]

i got it to work now. i never thought about this but it seems to have some influence.
i went to my windows partition, this is a old laptop only with 100gb hard drive. i cleared some space about 11GB and run the dvd again and it started normally.
no idea how this happens in a live cd... but i got it to work.

[weVeg]

ram? version 32 or 64 b? intel o AMD? md5? burned with?