Tmobile springboard reset when device only works plugged in.

My springboard tablet stopped working without being plugged in almost as soon as I got it from T-Mobile. It fell from a height of about one foot onto a carpeted surface and stopped working. I finally opened it up and found out that the bracket that clipped and attached the the battery to the circuit board had cracked and broken away from the board. And I couldn't figure out how to solder such fine solders with my limited equipment and experience. My dilemma is that since it only works when plugged in, it automatically turns on when plugged in and I can't do the hard reset by holding the power button down and the volume down button until it vibrates and then pushing the volume up button. Does anybody have any suggestions on how to return the device to stock condition. How can I work around this hardware fault.

Do not leave turbo charger plugged in with screen on

Fell asleep last night with the turbo charger plugged in and a YouTube playlist going, phone was at least 120 degrees all around after being on for 4 hours straight. Brightness was a few ticks above 0.

Help! battery keeps charging on and off without being plugged in

running Darklokd 2.1 on my note 3, everything works smoothly but it keeps notifying me that it is charging even when its not plugged in, after 1/2 seconds it goes off and the repeat.
please help, I can't right on that specific thread because I'm new

Android motherboard flashing when Usb plugged in

Hey guys ...

i don't know hoy to explain it so i shot a video.

i actually wanted to do a "Cheap ChromeCast" With my broken phone, screen is broken since 3-4 months and i can't find a screen replacement so i took the phone apart, kept what i thought seemed still useful and then i took the motherboard and plugged it to my pc and the pc didn't recognised it and the led notification started flashing so .... yeah.

No ADB access.
huawei Ascend G6
drive.google.com/file/d/0BxVhy7EeXiDTRVhpOXZmckdEajA/view?usp=sharing
Help guys