Windows 10: Windows can't detect second monitor, despite it working on OS startup, and being fully...

I have been using 2 monitors for weeks now. Today when I came home from work, my second monitor was no longer working. Windows shows that 2 monitors are plugged in, but wont display anything on the second monitor(it says nothing detected). When i press 'detect' it says 'Didnt detect another display'. The 2nd monitor works perfectly fine. I even tried plugging only that monitor into the computer and it worked as the main monitor.


I have tried going into the device manager and uninstalling the Display Adapters. When I do this and restart, the 2nd monitor works again. But then I have no graphic card drivers installed, so the resolution looks like garbage. As soon as I install the drivers back in, the 2nd monitor stops working again. I've also tried syncing both monitor to the same hertz but that did nothing. And of course i tried simply uninstalling the display adapter and reinstalling but when i do that the 2nd monitor never comes on at all. I also tried disabling and enabling.


At this point im completely lost on what to do here. It's clearly a windows 10 issue



Graphic card: Radeon R7 240

:)

 

Windows 10 Does not detect second monitor on startup

Dell Inspiron running two monitors through docking station. Om startup, the second monitor is not detected. However, if I put the system to sleep and then wake it, the second monitor is detected and works. All drivers are up to date. Display settings
for the second monitor are set to extend.

 

Windows 10 can't detect my second monitor

Thank you for confirming. We can do the following:

When the second monitor is not detected, we need to isolate if it's the monitor, the cable connecting them, or the port. We suggest that you remove your 1st monitor, then use the 2nd monitor as your 1st monitor. After that, connect the 1st monitor as the
2nd monitor.

Usually, this it's driver-related. Windows 10 won't be able to detect the 2nd monitor if the monitor driver is out of date or faulty. We recommend, rolling back to the previous installed graphics driver and monitor driver if it updated. Otherwise, update your
graphics and monitor drivers on the Device Manager. To do so, follow the steps below:

• Type Device Manager in the Cortana search bar and press Enter.
• When the Device Manager window appears, click the Display adapters and right-click the item below.
• Select Properties, then Driver tab, and click Roll Back Driver and follow the on-screen instructions.
• Expand the Monitors, then right-click the second monitor and select Properties.
• Click the Driver tab, and click Roll Back Driver and follow the on-screen instructions.

If the issue persists, update the drivers. You can manually update the driver by visiting the websites of your graphics card and monitor manufacturers to get the fully compatible drivers for Windows 10. You can run the Find
and fix problems with devices and hardware to automatically check for driver updates. Additionally, we'd like to know the make and model of your graphics cards and monitor?

Post back anytime at your convenience.

 

Second monitor not detected

Hello,

May we know if you've already tried the suggestion provided by Robert Aldwinckle on forums on this

thread?

If Windows can't detect your second monitor, it's usually a driver problem. It could be due to your video driver being outdated, incorrect or faulty. It's also possible that your monitor driver is causing the problem.

Since the issue occurred after the latest update, it's possible that the video or monitor drivers require an update. Try looking for the updated version of the drivers on the device manufacturer's website and follow their instructions.

If the issue persists, try to roll back the drivers to the last good configuration. To do that, you may follow these steps:

• Right-click the Start button and select Device Manager.
• Right-click your device driver, select Properties, and browse to the
  Driver tab.
• Press the Roll Back Driver option if available, and Windows 10 will begin the process.

Let us know how it turns out.