As mentioned the info you provide is sparse to say the least and have you contacted support officially?
Note you have 30 days from receipt to return the laptop with no explanation required.
So full details of what you have and what you have tried.
Is it a DIY? have you tried using one ram in different slots.?
Is it just the screen or do you also have sound output glitches?
Are the keyboard lights working with stability ?
There are many questions that could be asked to try and pin the issue down, so please provide as much info as you can. See the guide on starting a new query.