Question Crashing pc

Feb 13, 2019
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My pc keeps crashing every time i try to play any game, it runs well for a few minutes but then the game freezes and the monitor starts to display white/multicoloured x and o's everywhere. Ive reinstalled windows, ive also cleaned my pc and cant really think what the problem could be other than a broken motherboard, gpu or too low wattage on my psu.

Appreciate all the help thank you!

Specs:
CPU: I7 7700K
RAM: Corsair Vengance 16GB
Motherboard: asus Z270 F
GPU: Gigabyte RTX 2080ti
Storage: 2× Crucial 500GB SSD