"Why is my tablet not charging?"に関する回答First, check the charging cable to make sure it isn't damaged or not fully plugged in. If the charging cable is in fine shape, the charging port is the problem. Check to make sure there is no debris (lint, dirt, etc.) inside, and the actual port itself is not damaged. Check out the troubleshooting page for more detail.
"Why is my touchscreen not working?"に関する回答Depending on the reason there are a couple of different solutions. If the screen is frozen, it will need to be rebooted. Either by holding the power button down for 10 seconds, or the power button and "volume down" button at the same time for 10 seconds. After it restarts, the touchscreen should be working. If it's still not working, the digitizer may need to be replaced. You can find the steps in more detail on the troubleshooting page