UPDATE – September 24th – see http://blog.hametbenoit.info/Lists/Posts/Post.aspx?ID=729
Since last September 11th, I have been running into a major issue with Windows 10. No matter what, always got black screen after startup.
I tried all recovery methods – including what was found on the internet and which was mostly related to the preview builds. The only solution was a factory reset but after the first 2 updates, the black screen comes back.
After multiple tries to find out, I may have found the root cause: the Graphic Tools (Direct X) feature.
As soon as I uninstalled this feature, I have been able to get all working.
At least this works on my Surface Pro 3 – still have to recover my other PC.
Just to precise, Windows 10 was installed as fresh install, no upgrade from the preview build nor Windows 8 upgrade.