I connected my Toshiba laptop to a LCD projector. I went to Control Panel - Device and Printers - Connect to Projector - External Screen Only. Nothing showed on the projector and now my laptop has a perpetual black screen. How can I fix my laptop? Thanks for your help.
I know this is an old thread, but on most Toshiba laptops, especially with the Toshiba Value Added apps installed (which gives you the layout of the function keys on the keyboard), sometimes you need to press the function key that switches your display from the laptop to the projector twice
in order for the laptop to actually do the toggle between display modes. I'm experiencing a similar problem with my laptop where I'm trying to connect a projector to it and all I get is a black screen on the laptop, with nothing on the projector either. It's very likely that your GPU does not have a problem at all
, especially since your machine seemed to have been working fine right before you switched the display initially. Here are some solutions to try:
- What cable type are you using to go from the projector to the computer? It could be VGA to VGA, DVI-I to HDMI, DVI-D to VGA, and so forth. Make sure that you have the exact cable you need for your system. There is a difference between how DVI-I and DVI-D video signals are transmitted, so if you have the wrong cable, video signals won't be sent properly to your projector from the computer.
- If you know you have the correct cable, look for a button or menu setting that will change the input on the projector (computer 1, computer 2, etc). If you have the wrong input setting configured on the projector, you will just get a blank screen there, too.
Hope this answers your question.
All the best,