Issues setting up Docker (toolbox) on Windows 7

While trying to run hello-world, I encounter this error message: https://drive.google.com/file/d/0B0rw5s9roTIiWnpOM1JhVUNDZVU/view?usp=sharing

After reinstalling the toolbox, and reconfiguring the bios to enable hardware assisted virtualization, there was no improvement. I tried running start.sh, and encountered this: https://drive.google.com/file/d/0B0rw5s9roTIiNHBadjVtT3I1bkE/view?usp=sharing

Any help/reference I could find to solve this? Appreciate any pointer on this. Thanks!