To start with first my different machines. First a desktop (self made) with Windows10 Ver. 1903 Build 18362.267. Graphics Nvida Geforce GTX 650. Installed Cura 4.2.1, no problems what so ever.
Second a Laptop HP Windows10 Ver. 1903 Build 18362.267 with Intel HD Graphics Driver version 22.214.171.12470. Installed Cura 4.2.1, no problems noted.
My work Laptop Asus Vivo Book Windows10 Ver. 1903 Build 18362.239 and. 267 after update with Intel UHD Graphics 600 driver version 2420.100.6287. Installed Cura 4.2.1 will not start, reinstalled the previous beautiful working 4.1 splash screen came up until "The configuration will be updated" then disappeared and did not start up. The task manager had three cura.exe showing with 0% working but three different sizes, one had 53.2 Mb, one had 4.6 MB and the last one had 53.0 Mb. Stopped all exe and restarted the laptop. Uninstalled both Cura version and restart the laptop again. Installed Version 4.1 but it do not want to start. Uninstalled 4.1, restart installed 4.0 with the same result, no start.
The compatibility with Windows 8 I tried at first, before I started all the rest, I forgot to mention that.
Uninstalled 4.0 installed 3.6 and it worked.
Then I had a good idea and formatted 😏 my harddrive, reinstalled Windows with version 1903, installed Cura 4.2.1 with the same results as before. Also any version with a 4 will not start anymore. Version 3.6. works beautiful as before but I'm not able to got any Version 4. to work.
That was my weekend.
If somebody has any idea please answer me.
I need a little help now.