@SpecterK1

https://forums.opera.com/topic/87088/how-to-fix-opera-gx-grey-black-white-empty-screen-on-startup/2

Have a look here, this fix works for me

@leocg Same issue here, using Opera One on Windows.
Reinstalling, uninstalling etc. didnt help.

Worked when I started the PC, then I pressed the update button in Opera. Afterwards just grey screen.