XPS 13 9343 problem

Got a xps 13 9343 running wind 8.1 x64.

After some recent updates it will no longer boot , it hangs at the dell logo only showing a spinning circle.

Did a new clean install of win 8.1 , works well until all updates are installed then I get the same issue.

Tried to do a clean install of win 10 , same problem at install.

Turned off as many items as possible in the bios , upgraded the bios to  latest version A07. Tried installing both UEFI and Legacy mode.

Been puzzling to get it working for days now. Found an issue with the  SK Hynix SSD firmware but this machine has a Samsung PM851 M2 2280 SSD

Tried to install windows 10 32 witch works perfectly. But to be able to use all mem I need x64

Anyone has any clue on how to solve this ?  Tnxs