Troubleshooting a Second Monitor Not Detected After a Windows Update
Recently, I encountered an issue where my second monitor was no longer recognized across various applications and display settings following a Windows update. The monitor in question is a Sceptre L24 with a resolution of 1920x1080p, connected via DisplayPort (DP). Unfortunately, switching to HDMI isn’t an option due to port damage caused by a previous connector, and the monitor’s warranty has long expired.
What Happened
After installing the latest Windows cumulative updates—primarily addressing Windows Defender and system security—the problem emerged upon restarting my PC. Despite multiple attempts to detect the monitor manually, Windows and NVIDIA GeForce experience constantly displayed messages indicating the monitor could not be detected.
Troubleshooting Steps Taken
- Driver Reinstallation and Rollback: I tried reinstalling graphics drivers, deleting current drivers, and rolling back to previous versions. None of these steps resolved the detection issue.
- Force Detect: Attempted manual detection through both Windows display settings and NVIDIA control panel, with no success.
- Cable Consideration: Given that the DP cable might be faulty, I plan to acquire a new one to eliminate this potential hardware issue.
System Specifications
To provide context, here are my current hardware details:
- CPU: AMD Ryzen 7 9700X
- Memory: 32GB DDR5 Corsair Vengeance RGB
- Graphics Card: NVIDIA GeForce RTX 3060
- Main Storage: Samsung 980 PRO 2TB SSD (Boot Drive) and Seagate Barracuda 2TB HDD
- Main Monitor: Samsung Odyssey 32-inch G5 (2560×1440)
- Secondary Monitor: Sceptre L24 1920×1080
- Motherboard: Gigabyte AM5 B650
- Power Supply: AresGame AGK850 850W
Seeking Advice
Despite the extensive troubleshooting, the issue persists. I’m considering replacing the DisplayPort cable to rule out a hardware fault and researching whether recent Windows updates have caused display compatibility issues. If anyone has encountered similar problems or has potential solutions—such as specific driver configurations, BIOS settings adjustments, or Windows updates to roll back—I’d greatly appreciate your insights.
Conclusion
Software updates can sometimes inadvertently cause hardware compatibility issues. In cases like this, systematic troubleshooting—sp
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