Windows 8: Slic3r does not start

Hi all
I have a Win10 64 installation. Yesterday, I downloaded 1.2.9 and was able to setup my printer and finally print a model. Later I had a crash on the laptop without a usable errormsg (to me) - let me say a blue screen. I was not in Slic3r working, but it was there in the background. So I do not expect the crash from it.

Since then, Slic3r do not start anymore. Double click on it brings the rotating donut for about 2 seconds, thats it.

I then tried 1.2.9 in 32bit and also 1.3.0-dev. almost the same result. The first time I got a warning from Microsoft defender SmartScreen. I went to details so I could start it anyway. Guess what: Does not run. I added Slicer (the whole directory) to defender exeptions, I disable defender as well as SmartScreen. But all with the same result. Slic3r does not start anymore

When I start the app as admin, the donut is there for about 5 seconds but does not start the app anyway.

What can I do? Is it possible that some dll or whatever will be deleted just after copy them? How can I track what is missing/wrong? I do not expect a Slic3r-Error, I expect it in my system. But I'm running out of ideas.

Thanks for help.

Edited 1 time(s). Last edit at 04/12/2017 11:26AM by nique.

Sorry, it is Windows 8

No hints from anyone?

Without knowing what the blue screen error message was, it is hard to say what is wrong. There is a reason those blue screens display error codes.

Edited 1 time(s). Last edit at 04/12/2017 01:22PM by MrBaz.

After I installed a newer version of slic3r it took about 1min until I saw the User interface.
Maybe you can check the task manager to see if the program is busy in the background. ( collecting info of the former version etc... )

My Slic3r has always taken a minute to bring up its GUI on Win8 after launching. I have no idea what it's doing for all that time. Perhaps trying to find a meaning for its existence? Trying to bring World peace? Works OK once it's decided to finally make an appearance.

Dave