I recently installed Windows 7 on a Toshiba Satellite laptop. After updating, my machine would start but the screen remained off.
I was able to fix this by connecting an external monitor. The external monitor worked and I boot into Linux and everything worked fine. I was able to disconnect the external monitor and boot normally.
Now I'm having the same problem, but the original fix is not working. The external monitor status black. If I press any buttons on the monitor, it says it's in sleep mode.
I've tried every combination of holding in the power button, booting with and without the battery, etc.