How-to Charge iPad with Computer. Many Apple users have complained that their iPad shows “Not Charging” while plugged into their. iPad Pro connected to a digital camera via USB-C cable. Connect to a computer. Charge iPad Pro. Connect to displays. Play audio. Connect to. Linking an iPad to a PC via the USB port produces a 'Not Charging' warning. We explain why. Most Macs can do this. Other computers may or may not work. The iPad may need to be turned off for it to charge in this scenario. Answered by. iPad won't charge on your PC? Restart your computer or use a wall charger. Alternatively, try other solutions from this article. (This is equivalent to rebooting your computer.) . The best way to charge an iPad is to use the charger that came with it and plug that into a. You can also charge the iPad by connecting it to a computer using the Lightning- to-USB cable. This method, while slower, is useful when you want to manage. The iPad needs a high-power USB port to charge, which are less common on older computers. Many USB hubs and keyboards with USB ports won't work. The “Not charging” message usually shows up when iPad is plugged into a computer via USB, but sometimes it will show up when plugged into.