Endless Installation --> Stuck at : Completing Installation

Hi ;)

I'm trying to install W7 on my laptop but I have a problem.

I had vista on it, I started the installation going on the iso and clicking on Setup.

All went fine, I selected an empty partition of 40go.

It installs and at the final step : Completing installation, nothing happens. It stays on this step.

I tryed booting it from an USB disk, same happened.

I formated the main partition trying to install 7 on it, same.

Computed spec :

It's a laptop, Intel Centrino 1.4Ghz, 2go ram, 128 mo geforce

I wondered if I needed to install vista in English and then make an update ?

Thanks for help

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