Question PC suddenly stopped showing display

[Koldsice]

Hi,
So I've built a PC a couple of months ago and everything was working fine until suddenly after waking up I see that I can't get any display to show an image.
I have two displays: 1 monitor connected via DP,and a 4K TV connected via HDMI, neither of the show an image.
The PC turns on and all the lights turn on,but the GPU's fans won't turn on(although all the lights do).
Tried connecting to the MOBO integrated graphics but still no good.
More things I've tried:
-Clearing CMOS battery.
-Reconnecting all power cables firmly.
-Reseating RAM sticks, trying with one stick at a time in different slots.
I've tried poking around the web and the only answers I could find point to an insufficient PSU but I wanted to check before trying to replace it since it's only a couple of months old(all the parts are only a couple of months old).
The parts:
GPU:MSI RTX 3080 10GB Gaming Z Trio, no OC
CPU:I7 12700KF, no OC
RAM:Corsair Vengeance 8GBx2 3200 MHz
MOBO:Asus TUF Gaming Z690 Plus WIFI D4
PSU:Corsair 750i Platinum
Thanks in advance!

 

[Lutfij]

Tried connecting to the MOBO integrated graphics but still no good.
Your processor is the KF suffix which means that it's devoid of an iGPU. You could source another discrete GPU to see if your GPU might be at fault.

Also, you're underpowered for your build. You need a higher wattage unit.

 

[Koldsice]

Hey
Thanks for the reply, unfortunately I don't have a spare GPU.
I'll try replacing the PSU with a higher wattage unit,I'll update if it solves the problem.

 

[Koldsice]

I tried to replace the PSU with a be quiet! Straight Power 1000w 80+ Platinum
Still the same problem..
I guess the only logical conclusion is that the GPU died?
Although all the lights on it are on,the fans won't spin and no image is showing on any display.