The Mitsubishi NR-VZ800MCD is a legacy multimedia navigation system (typically from around 2003–2004) that frequently encounters a "boot error" or "blue screen" message when the vehicle's battery is disconnected or replaced. This system relies on an external boot disk (CD or DVD) to load its operating system and map data; without this disk, the unit cannot initialize after losing power. Troubleshooting the Boot Error
Insert the Original Boot/Map Disc: The most common cause is the system losing its memory after a battery change. Locate the original DVD/CD that came with the vehicle and insert it into the disc slot to reload the software. mitsubishi nrvz800mcd boot disk full