MacBook Pro 2018 model i5 screen flickers and retains old window data along with a vertical bar

Sreevarsh_Vasista wrote:

my mbp suddenly developed this issue and ive tried resetting the smc and what not but nothing seems to be working.. does anyone know what to do

https://discussions.apple.com/content/attachment/066ead98-fbb8-443f-8485-87d984090f2a

You should try resetting NVRAM/PRAM Reset NVRAM on your Mac - Apple Support

Plug into an external monitor and compare your results, this would be telling

Vertical issues almost always a fault in the display itself, display cable, or display assembly.

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

Contact Apple for support and service - Apple Support

Sreevarsh_Vasista wrote:

This is how it looks when I connect it to an external monitor

https://discussions.apple.com/content/attachment/b2e75606-99ae-4e51-b82b-9b91d6e79680

You have a display issue...Vertical issues almost always a fault in the display itself, display cable, or display assembly.

If it was GPU it would effect the external as well.

Nothing can be done on line here for your hardware issue.