how to fix a triple vertical line on a toshiba looktop

[obeth.jorkin]

the screen is divided in three different section, separated by three 1/4 inches yellow vertical lines, one is closed to the left edge,

 

[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.

Should you get the same problem on the external monitor, then you may have to update your drivers. If that doesn't fix it, then right click on the desktop background and click on "Graphics Properties". Check the settings in there.