Bagaimana cara membetulkan komputer yang tidak akan mengenali monitor kedua di Windows?

First, ensure the monitor is powered on and cables are securely connected, trying a different cable, port, or device to rule out hardware issues. 2. Next, manually detect the monitor in Windows by going to Display settings and clicking Detect, or using Win + P to select Extend or Duplicate. 3. Update or reinstall graphics drivers via Device Manager, or download the latest version from Intel, NVIDIA, or AMD’s website, uninstalling and restarting if necessary. 4. Check graphics control panel settings—Intel, NVIDIA, or AMD—and enable multiple displays appropriately. 5. Test with a different user account or in Safe Mode to identify software conflicts. 6. Finally, verify hardware limitations, such as GPU support, power settings on laptops, or correct port usage when using dedicated graphics, as these can prevent dual-monitor setups from working properly.

If your computer isn’t recognizing a second monitor in Windows, it can be frustrating—especially if you rely on a dual-screen setup. The good news is that most issues like this are fixable with a few troubleshooting steps. Here’s how to get your second monitor working again.

1. Check the Basics First

Before diving into software settings, rule out simple hardware or connection issues:

• Ensure the monitor is powered on – Check that the second monitor’s power light is on and it’s not in sleep mode.
• Verify cable connections – Make sure the video cable (HDMI, DisplayPort, DVI, or VGA) is securely plugged into both the monitor and your PC.
• Try a different cable or port – A damaged cable or faulty port can prevent detection. Swap in a known-working cable or use a different video output on your computer.
• Test the monitor on another device – Connect the second monitor to a laptop or another PC to confirm it’s functioning properly.

2. Manually Detect the Monitor in Windows

Sometimes Windows just needs a nudge to find the second display.

1. Right-click on the desktop and select Display settings.
2. Scroll down and click Detect under the "Rearrange your displays" section.
3. Windows will search for and attempt to connect to the second monitor.

If the monitor still doesn’t appear, try pressing Win + P to open the projection menu. Choose Extend or Duplicate—this can sometimes trigger detection.

3. Update or Reinstall Graphics Drivers

Outdated, corrupt, or incompatible graphics drivers are a common cause.

Steps to update:

• Press Win + X and select Device Manager.
• Expand Display adapters.
• Right-click your graphics card (e.g., Intel UHD Graphics, NVIDIA GeForce, AMD Radeon) and choose Update driver.
• Select Search automatically for updated driver software.

If that doesn’t help, uninstall the driver:

• In Device Manager, right-click the graphics driver and choose Uninstall device.
• Restart your computer—Windows will reinstall the driver automatically.

For best results, download the latest driver from the manufacturer’s website:

• Intel: //m.sbmmt.com/link/706449df952ee5a68b92454ec61a18c4
• NVIDIA: //m.sbmmt.com/link/84b30ffe622e26fdc1e92969e4e874cc
• AMD: //m.sbmmt.com/link/76ea811ab0fa4779bc19b003bec98570

4. Check Graphics Control Panel Settings

Sometimes the second monitor is disabled in the GPU’s control panel.

• For Intel: Right-click desktop → Intel Graphics Settings → Display → Multiple Displays → Choose Extend these displays.
• For NVIDIA: Right-click desktop → NVIDIA Control Panel → Set up multiple displays → Enable the second monitor.
• For AMD: Right-click desktop → AMD Radeon Software → Display → Eyefinity → Enable multi-display.

5. Try a Different User Account or Safe Mode

To rule out software conflicts:

• Create a new user account in Windows and log in. Test the second monitor there.
• Or, boot into Safe Mode with Networking and check if the monitor is detected. If it works in Safe Mode, a third-party app or driver may be interfering.

6. Consider Hardware Limitations

Some older or low-end systems may not support dual monitors:

• Check your graphics card specifications—does it support multiple displays?
• Some laptops disable the second display when running on battery—try plugging in the charger.
• Using a mix of integrated and dedicated graphics? Make sure the second monitor is connected to the correct port (e.g., use the GPU ports, not the motherboard ones, if you have a dedicated card).

Basically, start simple: check cables and power, use Windows Detect, update drivers, and verify settings in your graphics control panel. Most second monitor issues come down to one of these steps. It’s not complicated—just methodical.

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