Coloured Lines on Screen Macbook Pro Retina , 13-Inch Early 2015

My macbook pro will start and load up, the screen will work fine as soon as I log onto my account the screen goes to coloured lines horizontally. My workaround at the moment is plugging my Macbook into the TV and then my screen on my macbook works completely fine.

I'm currently using OSX El Capitan, when the issue started I was running Catalina.

I have gone all over the internet and tried to find a fix.

I've tried to do a NVRAM/PRAM reset.

I've started up on safe mode and the it logs on and works fine

I've erased the drives and re-installed the OS

I've done a hardware failure test and it came up algood.

Wondering if anyone has found a fix?