The Factory reset won't work in my Iconia A3

[PaulaSpears]

I tried to reset my Acer Iconia A3 but it's not working. I press wipe data/factory reset and then it says the process is complete so I press reboot system but after the reboot instead of starting it says choose a package to install. I don't know what to do. I try and try again, but it won't work.