Processor or video card?

Question

Video cards

message: Acer nitro 5 (15 year, video 1060). Worked for a year like a Swiss watch, the only problem was getting very hot. I read the reviews of this model, all the laptops are heated and quite strongly. A year later, under heavy loads (KS at maximum speed), it began to freeze (it just hangs and there is no reaction), only through a forced reboot. It cools down, the game time increases, then hangs again. I rattled it to the service, cleaned it, changed the gasket paste. nothing has changed. We started looking into it. They say they set fire to the viduhu, did reballing. Now hangs even with 4K video or when you connect the charger. I took it to another service, they said the hub burned out on the main process, you need to completely change the percentage.
who will say what? is it viduha or percent? it will not turn out that first percent then viduhu?
One service generally said the motherboard completely (and this is the cost of a new laptop)