Vivid visuals, precise color gamut, and industry-standard display quality are what you can expect from ViewSonic monitors. However, if there’s something that you cannot often anticipate is for it to suddenly go dark and appear dead. Unfortunately, multiple complaints have been raised by users who have reported that their ViewSonic monitor has not detected Windows 10 and shows a No Signal error message on the screen. Why does it happen and how to fix it? Let’s discuss this in this guide.
How to Fix ViewSonic Monitor No Signal on PC
Along with all other components of a PC, a monitor is highly important for obvious reasons. ViewSonic monitors have earned their place as reliable, high-quality screens, both for gamers and creative professionals. Now out of the blue issues are common and can be fixed.
Make sure to inspect display cables and replace them, if damaged. Then select correct Input source compatible with the cable type used.
Before solutions, let’s understand what are the reasons that might have caused the issue.
- Loose or Faulty Cable Connection
- Incorrect Input Source
- Graphic Card Issues
- Unsupported Resolution
- Corrupt PC BIOS Settings
Method 1: Unplug and Reboot PC & Monitor
Unplugging the monitor from the power source and then plugging it back into the computer can re-establish a proper connection between the two devices. Here’s how to do so:
1. Press the power button on your ViewSonic monitor to turn it off.
2. Locate the power cable connected to your monitor and unplug it from the power outlet or power strip.
3. If your computer is not already turned off, shut it down properly.
4. Once your computer is powered off, unplug its power cable from the power source or power strip as well.
5. Allow both the monitor and the computer to remain unplugged for about 30 seconds. This period helps discharge any residual electrical charge in the device.
6. Reconnect the power cable to your ViewSonic monitor and your computer.
7. Press the power button on your monitor & PC to turn it on. Wait for the computer to boot up and check if the No Signal issue is resolved.
Method 2: Inspect Display Cables
Many Viewsonic monitor not detected on Windows 10 problems are caused by issues with the physical connections. Here’s how you can inspect cables for damage:
1. Power off both monitor and computer.
2. Identify cable type (HDMI, DP, DVI, VGA) and check both ends for secure connections.
3. Look for cable damage (frays, bends) and try a different cable of the same type if available.
4. Set the monitor to the correct input source. (refer next method for detailed steps)
5. Power on the monitor, then the computer.
Also Read: Ways to Fix Roku No Signal Issue
Method 3: Choose Correct Input Source
The correct input setting ensures that the monitor and the computer are synced on where to find the incoming signal from and the No Signal detected issue is resolved.
1. Check type of cable (HDMI, DisplayPort, DVI, VGA) that connects your monitor to your computer.
2. Ensure your computer is turned ON and properly connected.
3. Locate the Input button on your monitor. Cycle through options to match your cable type.
Note: Some monitors require you to press the Menu button first.
4. Press the same button again to confirm and the monitor should display the signal now.
Method 4: Adjust Monitor Resolution Settings
Many times, a computer’s graphics card may be set to a resolution that is higher than what the monitor can handle. This can result in the monitor not being able to detect and display the signal correctly from your Windows 10 laptop or desktop. Here’s how to adjust monitor resolution settings to fix no signal error:
1. Reboot PC in Safe Mode as it uses a lower resolution by default.
2. Choose Standard display resolution by right-clicking on the Desktop and selecting Display settings.
3. Ensure your PC graphics card is set to a resolution your monitor can handle. You can determine Supported Resolutions as follows:
Option 1: Find your monitor’s model number and check the ViewSonic user manual.
Option 2: Increase resolution in increments, waiting 30 seconds between changes, to find the best one.
Also Read: Fix Screen Resolution changes by itself
You can also choose to Reset ViewSonic Monitor as well to fix No signal detected issue. If that doesn’t help, try the following solutions. Since these are highly technical, it is recommended to get it fixed from an experienced technician.
Method 5: Connect Monitor Cable to Dedicated Graphics Card
When the monitor is connected to the motherboard’s integrated graphics output, but there’s a dedicated graphics card installed as well, it can result in a No Signal issue due to conflict. To ensure that the graphics card connection is correctly set up, follow these steps:
1. Make sure your computer is turned off completely. This includes shutting down the operating system and ensuring there is no power to the computer.
2. Open the Computer Case. Identify the graphics card. It’s usually a separate card inserted into a PCI Express (PCIe) slot on the motherboard.
Note: The graphics card will have one or more video output ports (e.g., HDMI, DisplayPort, DVI).
4. Ensure that the monitor cable (e.g., HDMI, DisplayPort) is securely connected to one of the video output ports on the graphics card, not the integrated graphics port.
5. Sometimes, over time, it can become slightly dislodged. Gently press down on the graphics card to ensure it’s properly seated in the PCIe slot.
6. Close the computer case and plug in the power cord.
7. Turn on your computer and monitor.
8. Select the correct input source on your monitor to match the cable you’ve connected and try again.
Method 6: Reorder and Reseat RAM Sticks
RAM (Random Access Memory) is an essential component of a computer that stores data temporarily while the computer is in use. If the RAM sticks are not making proper connections, it can result in various issues, including display problems like the No Signal error. Hence, reseating it properly should help.
1. Shut down your computer and unplug it from the power source.
2. Open the Computer Case/Laptop Bottom Panel and access RAM slots on your motherboard.
3. Gently push RAM clips outward to release the RAM module. The module should pop up at an angle.
4. Carefully lift the RAM module out of the slot and check for dust or debris on the RAM module and in the slot.
5. If you see any, use compressed air or a soft brush to clean them.
6. Align the notches, insert the RAM at an angle, and firmly press it down until the clips click.
Note: If you have multiple RAM modules, repeat the process for each.
7. Plug in and turn on your computer to check for resolution of the issue.
Also Read: How to Enable Dual Channel RAM
Method 7: Reset CMOS/BIOS
The BIOS settings include information about the hardware components of the computer, including how the graphics card interacts with the monitor. Resetting the CMOS can fix any issues related to BIOS misconfigurations that might be causing the No Signal problem.
1. Turn off your computer and unplug it from the electrical outlet.
2. Open your computer case and locate the CMOS battery on the motherboard. The battery is a small, round, silver or lithium coin cell.
3. Gently remove the CMOS battery from its socket. You may need to gently press a small latch or release mechanism to release the battery.
4. After removing the battery, press and hold the computer’s power button for about 10-15 seconds. This will help drain residual power from the motherboard.
5. Place the CMOS battery back into its socket, ensuring it is properly seated. Pay attention to the correct orientation, usually with the positive (+) side facing up.
6. Close your computer case and secure it.
7. Plug in and turn on your computer to check if the No Signal issue has been resolved.
We hope this article helped you fix Viewsonic monitor not detected, no signal issue. If you have any other questions or suggestions, feel free to share them in the comments section below.