Plymouth boot screen not showing after enabling Nvidia drivers

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http://askubuntu.com – I'm running Ubuntu 12.04 with Wubi, When I first installed Ubuntu I could see the splash screen with the blinking dots, But after a couple of days it vanished (I've Nvidia drivers installed). I searched around and found this Enabling Nvidia driver messes up splash screen will it be safe to edit Grub as stated there(in Wubi installation)?, And will it work for 12.04? (HowTos)