Once the remaining battery power runs out, the scanner will not be able to turn on right after it is connected to the computer with the USB cable. Wait a few minutes until the battery is charged to a certain amount.
If there is no problem with the battery but the scanner does not start even if the paper chute is opened, the scanner might be hanged up for some reason. Close the paper chute and then press the [Scan/Stop] button and WPS button on the scanner at the same time in order to force the scanner to reset. You can turn the scanner on by opening the cover afterwards. Note: The configurations of your iX100 will not be reset by the force reset.
If the problem persists, the scanner device might be broken or damaged. Please contact our support center.