I killed my Tiva C-Series LaunchPad. Can anyone rescue it?

Question

I have a Texas Instruments Tiva C-Series LaunchPad (Part Number: EK-TM4C123GXL). I've got the LaunchPad for only a month. Most recently, I used Energia to upload the following code into my LaunchPad:

https://gist.github.com/phil3c7r0n/4e22cd686ae196f92e6b

In my code, I used the following pins: PB_7, PE_5, PB_6, PB_4, PE_0, PD_0, PD_2

And here is the guideline of the LaunchPad:

As you see, in my code I wanted to use PB_7, PE_5, PB_6, PB_4 as OUTPUT with Pulse Width Modulator (~PWM). However, for a stupid reason that I forgot about the guideline included in the LaunchPad's box, I messed them all up: I used Analog pins for Digital-purposed pins and Digital pins for Analog-purposed pins.

Importantly and deadly, I used PB_4, which has main functionality as "SPI CLK" (according to the guideline), for ~PWM (!!!). I also did the same thing with PB_6 and PD_0, which both have functionality as "SPI MISO" (according to the guideline).

Now my LaunchPad is dead now, and this is exactly how it looks:

Let me describe it: A steady half-green-and-yellow light indicating the power on, and that's all. I strongly want you to know that I PLUGGED the LaunchPad in my computer and it did NOT CONNECT to the computer AT ALL:

1. The computer didn't play the sound as usual when it detected USB connection.
2. There is no driver appeared in Device Manager although I had already viewed all hidden Devices:

There should be Stellaris Virtual COM Port located inside Ports, and there should be Stellaris In-Circuit Debug Interface (ICDI) driver as well. They disappeared, all of them.

3. From 1 and 2, I'm pretty sure that there is no way to erase and reset the factory settings for the LaunchPad.
4. I had already used LMFlashProgrammer from TI:

5. I had already used other USB ports on my computer.
6. I had already used other computers.
7. I had already tried to press the Reset button, even SW1 and SW2, but nothing happened.
8. Please don't tell me to upload the blink example (or any code) to the LaunchPad. I had told you, the computer didn't recognize the LaunchPad AT ALL.

[Editted] My schematic:

IMAGINATIVELY, IT WAS LIKE I LEFT THE KEY IN THE ROOM AND LOCKED THE DOOR.

Please help me with this problem! I feel frustrating now, and I need the LaunchPad back. I'm in an online course and it is in session! SINCERELY THANKS!

Answer 1

I, too, once destroyed my Tiva C-series dev board. Maybe the high inductance of motors drew current even when the output stage of the uC pins tried to protect itself. I can't see what is wrong in the picture of the board you posted. You can spend hours debugging this, and perhaps someone knows exactly what you did. However, the board is $25 and ships next day from digikey.