go blank
blank out , also: blank **

The screen went blank and then quickly came back up.

But I can't leave a movie until the screen goes blank.

When her mind goes blank, she takes it upon herself to read someone else's.

I tried to think of one, but my brain had gone blank.

Between one moment and the next, his mind went blank.

If you don't take it easy the whole thing can go blank again.

The movement was enough to cause the screen to go blank again.

Then his mind would go blank and he could not remember what happened next.

Her eyes went blank for a moment as she considered.

I turned to look at him, and his face had gone blank.