White screen upon launch

new install. first play. newbie install. when i press play button, screen goes white, curser spins, cannot cancel within game i must logout of win10 and log back in to clear away game

Do you have/had Razer product? If yes, Razer software may conflict with some blizzard games. Read this support article for details and solution:

If no, this is a general troubleshooting article sticky at top of the forum or read this (although it says black screen, it applies to white screen too):