Pc help needed please

Im playing a game and the. my computer just randomly stops displaying, the pc still has power and everything and it still doesn’t display and i cant turn it off from the button, i have to manually switch off the power on the back. After i switch off the power, it boots up normally. After about 15 minutes, same thing happens. If i leave it overnight, it works fine. This recently has beeb happening for about 2 weeks, I’ve had the pc for a year.

Anyone know the fix?