Turn on your computer and wait until the system is ready to use.
Check the USB connection. A tablet status LED should light whenever the tablet is properly connected and your computer has registered it as a USB device. If not:
Make sure the USB cable is securely connected to an active USB port on your computer.
Check the tablet USB cable for damage.
If you are connecting the tablet to a USB hub (or hub device with USB ports), be sure the USB hub is properly connected to your computer and is active.
If a status LED does not illuminate after your computer is on and has finished booting up, your USB port may be disabled. Verify that you have connected the tablet to an active USB port.
Connect the tablet to a different USB port, or to a USB port on another computer.
For best results when troubleshooting no power to the tablet (a status LED does not light), plug the tablet directly into the system USB port located on your computer.
Temporarily eliminate any external hubs in use until you determine that the system recognizes the tablet and that it is functional. When the tablet is working properly, you can then usually move the tablet to a USB hub.
Test touch. Attempt to move the screen cursor by tracking your finger across the surface. Then tap to select an item. On tablets with a status LED, the LED should brighten when you touch the active area of the tablet.
If the tablet driver does not load properly, basic touch movement will be recognized, but other actions and gestures will not. If gestures are not recognized, re-install the driver. See Installing the driver.