Problems after replacing screen

[chadc]

I have a samsung laptop that i recently replaced a screen on. When the screen was broke i got it to work via hdmi to a monitor to access everything. After replacing screen it goes thru colors on the screen of green red blue ect.. and keeps flashing those in a pattern. So my thought was graphics card went out. So i replaced the entire motherboard because it is integrated and it still does it. And i cannot access via a monitor anymore either. I have tried everything i am completely lost. Maybe i have the wrong screen? Completely lost here please help

Samsung np700z5b-s01ub

 

[PassMark]

Wow, it must have been expensive to replace the screen and then the motherboard in a laptop. Probably cost more than a brand new laptop?

Are you sure the new screen is the right model for the laptop? Did you do the job yourself, or send it out for repairs. Whoever is responsible, it sounds like they didn't do a very good job of testing it after the replacement.