I just installed lion on my macbook pro it doesn't let me log into my username. so what im going to do is to restore it and reinstall lion any help on how to do it correctly tho??

so i installed lion on my friends macbook pro and it didn't let me log into his personal username like after you turn it on it just hilghts his name and the bar to type in his password doesn't show you. so what i was thing is to back up his personal hard drive and restoring it and try to reinstall lion.. from a momory stick that i have put lion on as my personal copy. any way on doing it better or how to restore the mac and be able to reinstall lion plz help.

Chuck
Without knowing what exactly has gone wrong it is difficult to be precise, but it sounds a bit like you are attempting to install YOUR copy of Lion on your friend's machine?
I'm not sure the licence allows you to do that.
IF you are attempting to install a legitimate copy of Lion on his machine, then I would suggest you try again. That sometimes works.
Do you / he have a backup?
Have you tried starting from the recovery disk and repairing the hard drive etc.?

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