virtualization - I can't get any of the Android Virtual Devices started

I copied the ADT in C:\Program Files, updated the SDK path, deleted the .android folder in my user's folder, but that didn't solve my problem. When I start a virtual device, it shows the load bar, but after that, nothing happens.

What else should I try?

Answer

So I've managed to make it work by unchecking the option: "Scale display to real size." Very strange...