Which Toshiba? Which CPU?

Are you doing a WUBI install? It's meant for evaluation, not actual day-to-day
usage.

Most likely, you have a bad download or a bad burn of the CD. I had no trouble
installing 10.04 64-bit on an HP G62, which is probably quite similar to your
Toshiba. (Well, HP used up all four possible primary partitions on the hard
drive, which slowed me down some, but it doesn't sound like that was your
problem with the Toshiba.)

"An endless loop of errors" gives no hint about what problem you had. If you
quoted an error message, perhaps people could help you.

Everything Leslie said was correct.