Question Screen goes black and fans go wild

[Slickers]

So i had this pc for about 3 years and this is the first time this is happening, my screen goes black and the fans in my computer go wild, i know it might be something with the GPU, but both cpu and gpu tempatures were under 40 degrees, i even cleaned my pc from dust to see if that would help, the crash ocurs after 15 or more minutes while browsing the internet, and sometimes crashes right away when i turn certain games on, i will say again that i had this pc for 3 years and this is the first time this happend.

 

[rgd1101]

full system spec? include make and model of the psu

 

[Slickers]

full system spec? include make and model of the psu

Operating System
Windows 10 Home 64-bit
CPU
Intel Core i7 6700K @ 4.00GHz
Skylake 14nm Technology
RAM
16.0GB Dual-Channel Unknown @ 1063MHz (14-14-14-32)
Motherboard
ASUSTeK COMPUTER INC. H110M-A/M.2 (LGA1151)
Graphics
C27F591 (1920x1080@60Hz)
4095MB NVIDIA GeForce GTX 1080 (MSI)
Storage
232GB Samsung SSD 970 EVO Plus 250GB
931GB Seagate ST1000DM003-1SB102
Optical Drives
ASUS DRW-24D5MT
Audio
NVIDIA Virtual Audio Device (Wave Extensible) (WDM)

PSU i believe is a CX series CX750M - 750 watt

Tell me if i'm missing something, i'm not good with these things.

 

[rgd1101]

check the cpu/gpu temp during the game?
open the pc and check the psu model

 

[Deepaq]

So i had this pc for about 3 years and this is the first time this is happening, my screen goes black and the fans in my computer go wild, i know it might be something with the GPU, but both cpu and gpu tempatures were under 40 degrees, i even cleaned my pc from dust to see if that would help, the crash ocurs after 15 or more minutes while browsing the internet, and sometimes crashes right away when i turn certain games on, i will say again that i had this pc for 3 years and this is the first time this happend.

This is tantram of power supply. Change it.