Repairing Ubuntu without loosing data or breaking Windows

[Enrique Becerra]

On Thu, Jan 20, 2011 at 9:22 PM, Lucio M Nicolosi <lmnicolosi at gmail.com> wrote:
> Perhaps you could boot from the Live CD and check if your the problem
> persists, if so you may gave a hardware problem, if not you could try
> to reconfigure your system with "dpkg-reconfigure -a".
>
> L.

LiveCD starts and works perfect, no problems.
where should I run dpkg-reconfigure -a ? in the liveCD terminal?

Thanks,