I've booted into safe mode with command prompt, used bcdedit and set the truncatememory (ram) and numproc (processors) to default. Turned out these were or too low or too high.
System restore didn't worked and booting into safe mode without command prompt didn't work either.

But after the bluescreen was solved, the system restore went online and some of my programs are deleted, games were already deleted but I exspected them to be back as they were in the list of programs that should come back after the system restore.

About ten minutes ago I booted my laptop and windows was loading almost normal (about 5-10 seconds after the bios), my games were probably the cause of the slow loading.