My Toshiba Portege R200-S2031 LCD display has developed lines across top and RH side of screen. What kind of fix is there?

First, give the screen a good cleaning using a microfiber cloth. This may inadvertently remove the lines even though they are in the display.

If this doesn't work, you'll have to send the laptop back for repairs. Screens are not a component that can be replaced easily (such as RAM or a hard drive).

If your laptop is not under warranty, scope out some local computer shops that can replace the display for you. Make sure to ask them for a quote BEFORE they do work on your computer, otherwise they have the right to deny you your laptop, once they fix it, until you pay up (a possibly very nasty price).

Hi your computer display lines accross the screen indicate that the ribbon cable which connect display to the motherboard is going bad or the display setting need to be adjust, you can try to adjust the display first using the hardware control if it still exist take it to Techniction to get the cable change
thanks for asking
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hbristol173