Question i think my video card might be busted

[Baladaum]

okay so my screen is blaking while im gaming

it happens really fast, and it's more common while gaming (while the video card is being pushed), ive checked the temp and its 70ish at most

but sometimes my screen will blank just by using windows

my pc has an AMD Ryzen 5 8500G with a Radeon 740M (it's inbuilt to the processor i think)

 

[Lutfij]

my pc has an AMD Ryzen 5 8500G with a Radeon 740M (it's inbuilt to the processor i think)
When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time.

my screen is blaking while im gaming
What game are you taxing the system with? If you're taxing the system with more than one title, please mention their names as well.

 

[helpstar]

which power supply?
which motherboard? which bios version?
drivers up to date from amd?

check windows with dism commands
check ram with memtest
check drives with manufacturer´s tool

is the pc still running or does it reboot or shutdown?
ckeck monitor cable on both ends, check with a different monitor or TV