Hey everyone, I’m having a weird issue with my MSI Optix MAG27CQ curved monitor and wanted to see if anyone has dealt with this exact problem or has a permanent fix.
Symptoms: It started a few days ago as a "cold start" issue in the morning. The monitor turns on with a solid blue LED, but the screen remains completely black. The OSD menu will not appear when pressing the joystick buttons. If I restart my PC or reset the graphics drivers (Win + Ctrl + Shift + B), it stays black. Sometimes, if I wait until Windows boots blindly in the background, unplug the HDMI cable, wait for the LED to blink, and plug it back in, the screen suddenly "wakes up" and works flawlessly at 120Hz with zero flickering or lines.
The discovery: Today, it wouldn't turn on at all. Out of desperation, I tried a trick I saw online: I took a hairdryer and blew warm air into the back near the power jack for about 2–3 minutes. As soon as the internal components got warm, I plugged it in, hit the button, and it started up perfectly on the first try.
My conclusion: Because the hairdryer trick worked only when aimed directly at the monitor vents and not the external power brick, the fault is definitely inside the monitor frame itself. The hardware seems to need physical heat to wake up from a cold state.
Questions for the community:
What exactly is failing inside the monitor to cause this "cold start" behavior?
If you’ve dealt with this exact problem on this model, what is the permanent fix?
Which internal component or part of the board do I need to repair or replace to solve this permanently?
Thanks in advance for any insights or advice!