It is not easy to perceive a problem at first glance. But it does look like one of the possibilities is a hardware failure.
In view of the very recent purchase, if you are under gurantee, I would take it back to the seller to sort out.
Problem, as always, is, if you have installed your own software since purchase, the seller can get off the hook!
But, as you say it is flickering, there is the possibility that the graphics board is a little loose.You could try reseating it. Ditto the ram, although that is not a serious possibility, as it would give more positive indications of failure.
Similarly, check (inside) that the power connections are secure.