I have here my Mother in Laws C670-14D and its developed an issue whereby when you power up the screen is blank. it does have backlight and you hear the windows startup sound that you get before you login as windows starts up.

I can see the screen if I start in safe mode, in fact I'm using the PC in safe mode as I type this.

I did hae a similar problem in the past with another Toshiba laptop and that was windows 8, the issue was connected with power save settings but I've tried all of those and no luck. Also tried the remove battery suggestions, nothing has worked.

I'm guessing windows has done an update that is causing this but I'm at a loss and google has turned up nothing.

Running Windows 10 Home edition 64 bit

Any ideas anyone?

Thanks in advance

Steve