Drag and drop problem

hello unity people.

I got this weird problem with Unity from version 3.5.6 (I believe that’s the version, but I’m not sure). The problem is that I can’t drag and drop stuff from my Project bar into my Hierarchy bar. I made a video of my problem:

maybe the quality is not so good, but I can’t have better, because my computer can’t handle that.

Some users thought that it could be something in my computer itself, but that isn’t the problem, because the drag and drop works perfactly on, for example, photoshop. The only programs in which the problem occurs, are Unity and Windows Movie Maker. I can’t update Unity to the latest version, because my computer doesn’t have the needed shader model, so I can’t check if it is not working with the newer Unity to. I also told about this problem in my first post, but I didn’t got a good answer on it yet.

Please, if you know a solution, post it beneath here, or beneath my video on YouTube. I would really appreaciate it.

Greetings,
Joris

try putting your windows in english or the keyboard maybe that’s why it doesn’t seems to registers your click, to one of my friends from a different country something similar happened to him.

I think it has nothing to do with my keyboard, because the drag and drop part is done with the mouse-cursor (don’t really know how to call it in english).
I still have the problem but still don’t know how to solve. If someone can give me tips I would appreciate it if you explain how I can do it. I am just 14 years old and don’t know much about these things.