Hi,
* plug-in your Asus Tablet via USB Cable
* go to Device Manager to check if Asus is detected [http://goo.gl/YRbGic|find it here]
* if preset with a " ! " right click on it and Uninstall
* unplug Asus USB Cable
* reboot
* re-plug to see if detected
'''''if not you need to manualy install the driver'''''
* go to [http://www.asus.com/fr/Tablets/MeMO-Pad-Products/|Asus MemoPad products for your Tablet]
* go to ''support''
* go to ''drivers''
* go to ''utility''
* look for '''''ADB DRIVER'''''
* download and install
* reboot your computer
* re-plug the Asus USB Cable
i hope this will work