Hello,
I have the same problem on windows 7 home premium. Blue line stops. Is it something I should do;
On the other computer that has windows 10 , I had no problem with joomla 3.7.4. installation.
Thanks,
I didn't find the right solution from the internet.
References:
forum.joomla.org/viewtopic.php?f=707&t=953831
Edit Astrid: Ik heb je link verwijderd omdat deze niets met de vraag te maken heeft.