First, your Windows must be able to connect (recognize) your Tablet flawlessly. Open Device Manager, check and see do you have any ‘Unknown device’ or Device with exclamation mark under USB Contollers. You should see something like ‘Intel USB Composite’. Depends on OS settings & Driver installed, my notebook also shows “Portable Devices” and “Android ADB Devices”. They used to be all OK. If any of them in ‘!’ mark, you likely will ‘waiting for devices’ as it can’t see your devices from Windows.
Try do whatever you can do get rid your driver issues. Some people solved by rebooting their Tablet from Android, some reboot PC, some change USB cables … etc. (you already got 3 working advices 😀 )
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