(Redirected) Latitude E5540 Flickering screen fades to greysih white and goes blank

I have a refurbished Latitiude E5540 that recently went out of warranty. While using it last night, my screen began flickering, the colors changed, the text looked blurry and multi-colored (almost like double vision) and the screen faded to a greyish white and became blank. I turned it off,tried to log back in but the screen was still a greyish white.  This was the first timme anything like this has happened.

To get it working normally again I  had to unplug the power source,remove the battery and press the on/off button to discharge the laptop. When i installed the battery and plugged in the power source I was able to log in normally and use it without incident for a while but the same issue happened again and I have to go through the same process to get it working again.  

Since last night, every time I use it the same problem happens.

Can anybody help or provide me with assistance with this issue