Toshiba Satellite A105 LCD Screen Problem

I bought a Toshiba Satellite A105-S1014 about 14 months ago. Recently, the LCD screen has been acting strange. When I open it, the image will flicker across the screen an eventually white out if I leave it for long enough. When it does this, the display will show the startup/desktop but will not work in real time. The only way I can get it to work correctly is to flex the screen or press on it somewhere until the screen works. I assume this means I need a new LCD screen, but before I drop 200 bucks on it I’d like to know for sure. Any ideas of what it could be other than the screen? And if it is the screen, can I just pull the old one off and put a new one on?