According to retro-focused podcaster "Retro Blast," Wii U consoles are "literally dying" due to unreliable memory chips used as system memory. If the device is left without power for too long, the inexpensive eMMC Flash memory soldered onto the motherboard can become corrupted, preventing the console from booting normally.
I haven't turned mine on in months. Maybe even a year. Now I'm kinda afraid to check.
by presidentsday