in the last few months i have had this problem where my pc screen goes black with no signal and the GPU fans go loud, this only happens when starting up games or in the main menu. sometimes it only goes to a black screen without the fans going loud but this only happens when actually playing a game.
so far i have tried:
clean instal of the drivers
applied new thermal paste
i used HWinfo to measure the stats when my pc crashes and the GPU temps dont go over 65 degrees from what i could read
from what i have read the usual issue is either the GPU or PSU but i want to know for sure.
Motherboard: ASUS sabertooth 990FX R2.0
GPU: AMD radeon RX480
CPU: AMD FX-8320
PSU:Corsair VS550 (orange)
OS: windows 10
Go to your WattMan settings and decrease the power to -20% or -30%. This will reduce the load on the PSU. In addition, the GPU temperature will decrease and the fans noise will decrease. There may be a loss of performance, but this will be much less than the percentage of decline.
The 480 is power hungry.....minimum power supply 500watt. You have a 550watt PS which is suspect if it 2-3 years old or older as all PS lose efficiency over time. I would try a new/different PS if you have access to one.
You can check your power supply rating in this article:
You are using a 28nm CPU and a 14nm GPU. No money should not be spent on this system. A new PSU is probably unnecessary for you if you don't have a restart issue. If you are using OC GPU, use a maximum of 1150mV 1266Mhz with WattMan or reduce power. You shouldn't have any problems. I also used a similar PC to your system for a very long time. A similar problem may occur with a more powerful PSU and OC GPU.
I have same problem too. All my system is updated and brand new. My PSU is FSP Hydro G 750W 80+ Gold. I have no power issue. Probably arise from Adrenalin driver. I think i will back to 19.9.3 again. At least there is no black screen problem. By the way, my card is Sapphire RX590 Nitro+ SE.
There is weight to what others are saying about PSU.
Getting the same issue over the year I've owned my Vega 64 LC and before you jump on the "well the Vega is more power hungry than the Polaris (RX480)" .... I am using a EVGA 1600 Watt PSU.