Asus took a Zenbook on warranty repair a month ago. They damaged it in the shop, then used that damage to invalidate the repair claim and sent me a bill. They refuse to take responsibility for the damage they caused and are sending the laptop back to me in worse condition than when I sent it in. Avoid these poorly made, more poorly supported products. Dell Corporate Headquarters Precision series are working great for me now, I recommend you avoid anything ASUS.