Lots of Green lines on screen!

@bheem46781 you can always try and replace the display since it is possible that this is the main issue. Since iFixit does not yet have a guide for that, use something like this video Replacement displays are readily available at many online stores.

If that does not fix your issue you know that the error is most likely related to a failure on the main circuit board. For that you will need the schematics, board view and the knowledge and tools to perform a board level repair. If you do not have any of this, consult somebody that has all of that.

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has a device with the same issues as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!