One of the defining attributes of DisplayPort (DP) is its ability to provide output to several displays through Multi-Stream Transport. And for that, it utilizes cutting-edge protocol and signal technologies. It also can transmit both audio and video signals.
While DisplayPort (DP) offers several advantages over HDMI and DVI interfaces, it has flaws. When setting up your Dell monitor, it may fail to detect a DisplayPort connection. There are different reasons for no signal from your device.
If you are constantly experiencing ‘No DisplayPort cable’ or ‘No DP Signal from your device’ errors while setting up a Dell monitor, here’s how you can fix it.
What is a DisplayPort?
Before we jump to the root causes and methods you can use to fix the DP signal error, let us first understand what a DisplayPort is and how significant it is for your PC.
As the name suggests, a DisplayPort is a connectivity port that allows using multiple video sources easily with your device. The DisplayPort is for PCs, and the HDMI port is for TVs.
However, while HDMI ports are also found on PCs, there are rare chances you will find a DisplayPort on a television.
To give you a gist of the difference between HDMI & Display Port, a regular HDMI, HDMI 2.0, supports a maximum bandwidth of 18Gbps which can easily help you run 4K videos at 60 FPS; however, the DP 1.4 offers a bandwidth of massive 32.4 Gbps, taking the potential for quality to the next level.
What are the causes for the Display Port Not working on Windows 10
There can be different reasons behind a ‘No DP Signal from Your Device’ error. It can be any one of the below.
- Damaged Cable: If you use a damaged DisplayPort cable, the signal will not be transferred to the monitor. You may receive a partial signal, sufficient to obtain video but not video and sound.
- Incompatible Graphics Card: If your computer has a DisplayPort interface, your graphics card should be able to handle it. The signal will not be processed if the graphics card has been changed or you use an external graphics card.
- Malware: If your computer has viruses or spyware, the signal may stop reaching your monitor. It occurs when malicious software collides with a driver that enables your display to work.
Effective Solutions For ‘No DP Signal From Your Device’ For Dell Monitor
If the DisplayPort option is accessible but no signal appears on the screen, perform the following steps to resolve the issue.
1. Unplug and Reconnect the DisplayPort Cable
To resolve the ‘No DP Signal From Your Device’ error, unplug and reconnect the DP cable. A loose cable is what usually causes the errors. A damaged DisplayPort, loose cable, or broken/substandard cable can all cause the ‘No DP signal from your device’ error. While at it, ensure no external material interferes with contact between the cable, your computer, and the DisplayPort display.
2. Restart Your Devices
If changing the cable does not resolve the issue, restart your computer and the external display. Unplug the monitor from its power source, wait approximately 10 seconds, and then plug it back in.
3. Use a Different DisplayPort Cable or Computer
If you are still unable to fix the issue, we recommend you try using a different DisplayPort on your current PC or a different computer to connect using the same cable. Confused? Well, don’t be.
Sometimes you do not realize whether the USB port is causing the error or the cable. Hence, to identify the error closely, you can either –
- Try using a newer cable with the DisplayPort on your PC
- Or, try using the same cable you have on a different PC
This will help you realize the point of error so that you can rectify it accordingly. If the issue is with the PC DisplayPort, it is a hardware error. We recommend that you call in an expert with the same to fix the error.
If the issue lies in the cable, a replacement can be ordered.
3. Update the Dell Monitor Drivers
Check for the device drivers if you wish to fix DisplayPort no signal issue. An outdated driver version can and will prohibit the DP cable from recognizing your display. Make sure you install the updated versions of the device drivers. Otherwise, your device may not provide a DisplayPort signal to the monitor. Check for the Dell monitor device name and serial number and go to the official website.
Download and update the DisplayPort driver for Windows 10 and see if the issue is fixed.
Read More – How to Download and Update Dell Monitor Driver
4. Clear Display Cache
The next solution is to clear the display cache. To do so, disconnect the display from the system and download the Surface Dock registry file. This file will clear the cache whether you have a dock or not. Surface dock registry.reg should be executed. Yes, to allow changes to your Surface; yes, to confirm; and OK, to close the window. Reboot your Surface, connect the Dock and monitors, and test your external display again.
5. Select the Correct Input Source
If your display has more than one DisplayPort, utilize the menu to pick the proper active input source into which you connected the DisplayPort connection. Assume the display has two DisplayPorts, ‘DisplayPort1’ and ‘ DisplayPort2.’ If your computer is plugged into the first DisplayPort, ensure the monitor’s input source is set to ‘DP1’ or ‘DP2’ for the second DisplayPort.
6. Update Graphics Driver
If your computer does not identify an external monitor attached through DisplayPort, updating your display/graphics drivers may assist you in resolving the issue.
Step 1: Open the Device Manager, right-click the Start Menu icon, or hit Windows + X.
Step 2: On the next screen, click on the Display Adapter.
Step 3: As you spot your graphics card listed down, right-click on it and choose Update driver from the drop-down menu.
Step 4: Select ‘Search automatically for drivers.’
Step 5: Update the drivers and restart the system. It should resolve the issues if it is regarding the graphics driver.
Automatically Update Device Drivers-
There’s an easy way to fix the DisplayPort No Signal error on your Windows 10. You can automatically update the DisplayPort driver and graphics drivers on your computer. A third-party application – Advanced Driver Updater, answers all your driver-related queries. It is an efficient and easy-to-use application for your computer that can automatically detect outdated and missing drivers and update them in a few clicks. It will assist you in restoring your system’s peak performance.
Follow these steps to update your device drivers on your computer.
- Download Advanced Driver Updater.
- Run the Advanced Driver Updater after installing it and click on the Start Scan button, then wait for it to scan the system. It will automatically check your PC for outdated and incompatible drivers and generate a list for preview.
- Locate and click on the DisplayPort driver download update on the next screen.
- On the next screen, click on update and restart the system. This will update the DisplayPort driver on Windows 10 quickly.
- You can select Update All; Advanced Driver Updater will download and update all outdated drivers in the list.
Note : When you click Update All, you'll be prompted to upgrade to the Pro version. We suggest you get the premium version to help you update all drivers at once and save time.
7. Roll Back Graphics Driver
If your DisplayPort no signal suddenly appeared due to driver updates, you can roll back to an earlier version and restart your computer. To roll back the graphics driver, follow the below steps.
- To roll back your graphics driver, open the Device Manager. Expand the Display Adapters.
- Right-click on the Graphics card and click on Properties. Go to the Driver tab and then click on Roll Back Driver.
Once you roll back the driver, restart your system.
8. Contact Dell Customer Service
If none of this helps, you Fix the DisplayPort No Signal error; the problem might be hardware related. Contact the Dell Tech Service for assistance or visit a repair shop near you to check the monitor for hardware damage.
Q1. How do I enable the DP port on my computer?
Connect the devices using your DisplayPort cable to enable the DP port on your computer. If you have never used one before, there are chances that connecting a device might initiate the process on its own.
However, if connecting the device does not trigger anything, you might have to manually choose the display source or enable the projection mode on your PC.
Here’s how you do it –
Step 1- Press Windows + P to open projection options on your desktop.
Step 2 – Click on Extend or use Second Screen Only, depending on your preference.
Step 3 – Once you have chosen the display, check if the connected output is getting any display or not.
If the screen is visible on your connected device, congratulations, you have enabled the DP port on your PC.
Can RAM cause no display?
Yes, RAM can cause no display. However, there is a dedicated scenario to it. When you use a PC that does not have a dedicated GPU and is using the internal video card, the heavy graphics load falls on the RAM.
This means the internal video card uses RAM to delegate visually heavy applications. If the RAM is not up to the mark or fully optimized, you may also experience display errors!
If you are trying to use the extended display with a DP port but getting no display or stuttering visuals, there are chances that your RAM is causing the issue.
‘No DP Signal from Your Device’ is a common computer problem. A variety of circumstances can cause it. Implementing all of these solutions will allow you to address the problem quickly.
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