Wii U Won't Boot to Main Menu

[Whitewater123]

My Wii U suddenly won't boot to the main menu. When I turn the console on, I get no response from the gamepad nor any output from the HDMI or AV, but the power LED indicator turns blue like normal. To turn it off, I have to hold down the power button, tapping it gives no response. Turning on the gamepad makes the console turn on, but otherwise the results are the same. If I select any application from the gamepad's quickstart menu, it sits on the Nintendo logo for a little while and then displays the "Could not connect to the Wii U console" message.
I've tried calling Nintendo support, who suggested unplugging the power supply from both ends. I also tried replacing the battery that helps the internal clock keep time and I even tried booting the system with the gamepad in a separate room out of range, none of these tricks produced any different results.

I do run mods on my Wii U, but I don't have any homebrew boot launchers installed; I always boot my Wii U into CFW by navigating to wiiuexploit.xyz on its web browser. Thus, it seems weird that any mods could be causing it to fail to boot, but just in case I decided to try booting it with no sd card inserted and with an empty sd card. No difference.

Can someone help me determine whether this is a mod problem or a hardware failure, and perhaps offer a possible fix? Here are some screenshots of my sd root and the wiiu>apps folder in case they reveal any potential culprits:

 

[godreborn]

I don't see anything wrong with your SD card. It sounds like a hardware problem.

 

[Whitewater123]

After reading this thread: "unbricking wii u black screen of death" by tiger1234
I think this is the problem I'm having. The last time I used my Wii U before it bricked, I was trying to update my system but it wouldn't connect to the server properly. I must have shut it down while the update process was underway.

UDPIH doesn't seem to be booting, though. I've tried with both the recovery_menu and recovery_menu_dc_init files. The message on the Switch screen gets to "Stage 2 connecting" but then it just says "Error" after a few minutes.

 

[SDIO]

Do you hear the Disc Drive initializing?
Do you have a NAND Backup? otp.bin?
Is this a 8GB or 32GB Wii U? When was it bought?

 

[Sombersnow]

i have the exact same problem, it got bricked when I entered miiverse for the first time. Did you find a solution?