Campaign wont start. Cursor disappears. Cant click

I can play single player custom maps. And that is about it.
I have tried a lot of different ways to get this fixed, using tips and trix from WC3-sites and forums.
I click on the campaignimage and then there is a sound startup, then the cursor is gone, and nothing happens. I can still move around and see that the buttons are highlighted when I have mouse-over, but nothing happens when I click on any button.
The only thing I can do, is using the ESC-button to mainmenu, where I have to alt+F4 to exit the game.

I have updated all my own soft and hardware with drivers, the game has been updated too via the battle-net application and the searchfunction in the support-area in battle-net is sadly really bad and does not help at all.

Please help,
best regards.