RTX 5090 Astral Black Screen during heavy games

[Arys]

Screen turns black after 10~20mins heavy games, GPU flashing red light, cant do anything till restart the PC.

1. PSU cables all connected, using 12pin 600w MSI MEG i1600 ATX3.1 PSU native cables.
2. Checked Coolant Temperature all good.
3. Downloaded newest softwares and NVIDIA driver version: 576.88.
4. Using 4K 240 Hz monitor nothing wrong when playing games like Diablo and league of legends.
5. GPU pins all checked green and pin's A numbers are even, nothing happened until screen turns black shows no signal.
6. Tried to lower the performance still not working.
7. Tried to lower the monitor's Hz to 120Hz not working.
8. Before the GPU flashing red light and black screen, it has very noticeable coil whine.

[Silent_Scone]

Hi @Arys 

The red LED indicator can mean a number of things, however, they're all related to power delivery. The issue will likely be with the native 12VHPWR cable/connector or the power supply itself.

The reason why that LED flashes is as follows:

1. The 12v voltage is lower than 10.8v (Power Detection). The reason may be that the wire is aging or the contact point is abnormal.

2. Among the 12+4pin power supply, one of the pins is abnormal.

2a. A single pin exceeds the set current value of 9.2A (no balance)

2b. There is no contact or the pin is abnormally melted.

[Arys]

Hi there, thank you for your help. Also for the power cable I switched to use the new power cable came from my PSU, checked the pin's value while under heavy gaming, the values are all under 8A and connector shows all green. Every pin's value number is around 6-7.8A. The graphic card is still making a noticeable coil whine while playing game. For about 10-20mins gaming it will black screen again. Is there something to do with 2x 4k 240hz Monitors? I have one 27"PGUCDM connected to graphics card with DP2.1, and another one 32"PGUCDM connected to graphics card with DP1.4.

[Silent_Scone · Accepted solution]

If it were due to a display-out issue, the GPU Power Detector++ LED wouldn't be blinking. This still indicates an issue with power delivery. Of course, you're welcome to simply plug in one panel and see if the behaviour persists.

[Arys · Accepted solution]

I removed the Type-C to Type-C cable came with my ROG-monitor which I used for charging my phone, now problem solved. I was plugging it to the monitor and trying to charge it.😅