Re: Stuck at boot screen
You need to replace "cd" and "drive" with the drive letters belonging to those drives.
That said, I wouldn't personally bother - a) I doubt it'll help, and b) you said it was a new PC. It shouldn't be doing that, something's clearly wrong therefore I'd send it back from where you got it and ask them to sort it out.
Save the whales, feed the hungry, free the mallocs.