My desktop computer is always kept on. Usually, I only turn off the monitor when I leave or don’t use it at night.

🚨 Problem Description

• After a routine operation, I discovered that the display was consistently in a black screen state.
• Attempting to power cycle the monitor, the screen still displayed “No Signal Input”.
• Using UU Remote Control to view the status, I found that both the desktop PC and another mini host were showing as online, indicating that the host itself may not have been shut down.

Troubleshooting Steps

To resolve the “no signal” issue, I attempted the following:

• Replugged the DP data cable.
• Switched to using an HDMI data cable.
• Switched the source to the mini host (testing whether the display was faulty).

🔍 Results and Resolution

All previous attempts to resolve the issue were unsuccessful. I searched on platforms like Douyin (TikTok) and saw suggestions stating “disconnect power for a few minutes and reconnect,” but after multiple trials, it was ineffective. Final Solution: Restarted the desktop computer. After restarting, the display signal returned to normal, and the problem was solved.