I'm having a frustrating issue where my monitor goes blank and displays a 'no signal' message about 5 to 20 minutes after use, especially when I'm watching YouTube. When this happens, I also lose audio in my headphones, and I can't turn off my PC using the power button. The only way I can power it down is by unplugging it or switching off the power supply unit. Here are my specs:
- Gigabyte B550M K motherboard
- AMD Ryzen 5 5600G with Radeon graphics
- 32 GB RAM
- MSI 650W PSU
I've tried a bunch of troubleshooting steps:
1. Used my monitor as an extended display for a laptop.
2. Changed the HDMI cable.
3. Bought a new power supply unit.
4. Removed the GPU and only used the integrated graphics.
5. Disabled Global C-state control and core performance boost in the BIOS.
6. Reset the BIOS by removing the battery for 5-10 minutes.
7. Checked each RAM stick.
8. Disabled fast startup in Windows.
9. Lowered the refresh rate to 60Hz.
10. Plugged it directly into the wall to check for AVR issues.
11. Monitored CPU temperature—it's not overheating.
12. Adjusted power plans in settings.
After all that, the issue still persists. I did manage to use it for 5 hours one night, but the no signal problem returned. Could the motherboard be the issue?
2 Answers
Does your keyboard or mouse respond when the signal is lost, or does everything freeze up? This sounds like a possible motherboard or integrated GPU problem. The fact that you lose audio too suggests it might not just be a monitor issue; it's likely freezing the whole system.
When your monitor goes black, do the lights and fans on your PC stay on? If so, there might be a power issue with the motherboard that's causing the integrated GPU to crash after a bit. It's worth checking CPU socket contacts too, just in case.
Yes, the lights and fans remain on. But I can't turn it off with the power button when the no signal issue happens.
While watching YouTube, the sound cuts out from my headphones when the monitor loses signal, and the mouse light goes off. The PC lights and fans are still on, but I can't turn it off using the power button; I have to unplug it or switch off the PSU.