i went to turn on my sony vaio and the computer comes on but the monitor isnt coming on what could it be

[1bluidbrnette4u]

i previously added a new operating system on my vaio and almost had settings right to get on the internet turned computer on and it turned on but the monitor wont come on

 

[webworkings]

Try this...

1. Turn the laptop off (not sleep or hibernate but off).
2. Connect an external monitor to the laptop.
3. Turn on the external monitor.
4. Turn on the laptop.

NOTE: You may have to press an "external monitor" button. Could be the f4 button or a button with two monitors on it, for the external monitor to work.

If you can see fine on the external monitor, then your attached display, or the ribbon cable that connects it, are your problem.

If you can't see on the external monitor at all, or the problem occurs on the external monitor as well, then it is probably the graphics card/GPU that is the problem, which may require the motherboard be replaced.