Moto G XT1031 Won't Power, Detected as QHSUSB__BULK - Problem attempting recovery

The phone (XT1031, 16GB, Republic Wireless, 4.4.4) is low use and nothing different was done the day it developed the problem. It worked Monday, on Wednesday it flashed indicator and the screen wouldn't power. It was hard-powered off (held power) and it wouldn't turn on again. The computer does not detect it. I have installed the 64-bit driver for my Windows 7 and am attempting to 'blank-flash' without success. Can anyone assist? Attached is the log. Thanks in advance.

C:\Users\Test\Desktop\blankflash>qboot.exe blank-flash
opening device: \.\COM3
OKAY [ 0.016s]
greeting device for command mode
OKAY [ -0.000s]
identifying device
...serial = 0x3598E90
...chip-id = 0x801 (MSM8626)
...chip-rev = 0x0
...sv-sbl = 0x0
OKAY [ 0.016s]
finding files
...programmer = programmer_8626.mbn
...singleimage = singleimage_8626.bin
OKAY [ 0.031s]
validating files
OKAY [ -0.000s]
switching to download mode
OKAY [ 0.016s]
greeting device for image downloading
OKAY [ 0.016s]
sending programmer
OKAY [ 0.047s]
flashing singleimage
Target LOG: Open multi failed, unknown error
Target ERROR: 7 - Open multi failed, unknown error
FAILED (sdl-transfer-image:send-image:sdl-open-multi:target error)