This is a rooted Chinese tablet running Android 4.2.2, and I would like to have it boot up automatically when plugged in. Currently, if the tablet is powered off by holding down the power button, it will turn on automatically when plugged into a USB charger. If the device is shut down using the power menu or the reboot -p command, however, it will not turn on when plugged in. It will only display the charging symbol. Running the "adb shell reboot bootloader" command reboots to a black screen. Any ideas?