I don't see a port to attach an external monitor to the Toshiba.....do you know the way to brighten the display. I recall reading a post where, the problem was the brightness had somehow been placed to DARK....and increasing the brightness brought the display back...just a long shot?
Typically for many Windows laptops brightness of the internal screen is controlled with a combination of the Fn key and two function keys (one for brighter and one for darker). Look for function keys with little sun symbols on them.
Edit: I should add that the flashlight trick works best with the lights turned off. Then point the flash light parallel along the face of the screen, not directly at it.
Edited by smax013, 29 May 2017 - 08:53 PM.