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Samsung monitor not detecting HDMI [Guaranteed Fix]

Samsung monitor not detecting HDMI

Samsung has a great lineup of monitors mainly using HDMI or High-Definition Multimedia Interface. It is a reliable source that sends high-definition audio and video signals over a single cable.

Like most other IT manufacturers, Samsung has replaced older VGA, component video, composite video, and DVI cables.

Samsung monitor not detecting HDMI is not a common problem, but if you have it, here are the causes and fixes that work most of the time.

A loose HDMI cableImproper insertionDisconnect the HDMI cable at both ends and then reconnect after one minute gap
Damaged HDMI CableOver-twistingReplace the video cable with a new one
Damaged HDMI PortFrequent insertion and removal/Physical damageRepair the damaged port/use an alternate port
Problem with the graphic card, including its port or chipsetShort Circuit/Physical DamageUse Builtin HDMI port/Repair graphic card/Remove, clean, and reconnect graphic card
Loose or Dusty RAMDusty EnvironmentRemove RAMs and clean with Isopropyl alcohol and nylon brush
Selecting the wrong input and output sourceNonSync Input Output source selectionselect the proper HDMI interface to set up the monitor connection
Corrupted BIOS SettingVirus/SoftwareRest BIOS setting to default
Samsung monitor not detecting HDMI with solution

Recently HDMI interface has been very popular and is used in multimedia devices such as modern televisions, monitors, Xbox, Playstation, Macs, and PCs. Therefore, a problem with your Samsung monitor HDMI can surely ruin your work or fun routine.

Fixing Samsung monitor not detecting HDMI

First, check the HDMI cable connections. If they are loose, tighten them to fix the “Samsung monitor not detecting HDMI” issue.

If it doesn’t work, then power off the monitor and PC/Output device, disconnect the HDMI cable at both ends, and then reconnect after one minute gap.

If nothing works for you, look for damaged PC HDMI, graphic card ports, or RAMs and repair or clean them. Lastly, reset the bios if needed.

Now that I have summarised the issues and their solutions let’s discuss them in detail for a good insight,

Fix 1: Tightening a loose HDMI Cable

A loose cable connection is the most common cause for the Samsung monitor not detecting HDMI. Therefore, ensure that both ends of the HDMI cable are tightly connected to your Monitor and PC.

Also, Do not forget to check whether you connected the HDMI cable to the designated port. If you have a graphics card, connect the cable to the card port.

It is important to remove the graphic card before using a built-in HDMI port on a PC, or the port will not receive a signal.

FIX 2: Resetting HDMI Connection

This is probably the easiest and most effective method to fix your Samsung monitor not detecting HDMI issues. All you have to do is to reset the connection.

For this, turn off and unplug the monitor and computer and keep pressing the monitor’s power button for 30 seconds. After 30 seconds, replug the cable and turn on the monitor first, followed by your computer.

Fix 3: Replacing HDMI cable/Repairing Port or Using alternate input port

If your Samsung monitor is still not detecting HDMI cable, then visually check the cable for any physical damages like overtwisting, cracking, bent pins, etc.

If you find any fault, replace the cable right away.

If your HDMI cable is normal, the display port might be damaged. Due to repeated removal and insertion, the small pins inside the ports get damaged, and the port becomes loose over time.

This fails to create a secure connection and hence needs repair. An expert can only change the port, so do not try it yourself because you might damage the PC board.

Alternatively, you can use other video ports like VGA, DVI, and thunderbolt instead of HDMI. However, do not forget to change the settings on the monitor through the OSD menu.

Fix 4: Remove and clean or Repair the graphic card

The graphic card is the motherboard and processor of visual input. It will fail to work if your graphic card isn’t connected to the main motherboard correctly or loosely fits.

Carefully removing and reinserting the card firmly might solve the Samsung monitor not detecting HDMI.

Moreover, a dusty and un-clean graphic card also fails to work properly. So if you haven’t cleaned your PC in a while, this might be why you are not getting HDMI output signals. Below is a video that will help you with cleaning it.

If your graphic card smells burnt, it might not be good news. The fans on the graphic card suck in air for cooling purposes, and sometimes due to extreme moisture or humidity, water vapor condenses over the board, which might short-circuit and burn critical ICs.

Often these ICs are so small that they are irreparable, and you might need to buy a new one. However, an expert technician might get you out of hot water.

Fix 5: Selecting the proper interface

Samsung monitors provide multiple display ports like VGA, HDMI, DisplayPort, or other interfaces.

Therefore, you’ll have to match the correct input and output source; e.g., if you are using an HDMI connection but the source is set to VGA, your monitor will not detect the HDMI.

Similarly, selecting different HDMI ports might as well trigger no input signal.

Here is how to choose the proper input source on your Samsung monitor:

  1. Press the OSD button on your monitor to launch the On-Screen Display (OSD) menu. The button might be on the Samsung model’s front, back, or bottom.
  2. Next, go to Settings and select the Video Input control section using the guide buttons.
  3. Select the proper interface matching input and output source.

Fix 6: Resetting the BIOS

A virus, software, or new windows installation might get your BIOS/UEFI setting to set off. This can cause Samsung monitors not to detect HDMI.

Therefore you must reset the BIOS/UEFI to default settings. For this, follow these steps,

  1. Restart your computer; it will ask you to press a button to enter BIOS setting. Depending on the PC manufacturer, the key might be F10, F2, F12, or F1.
  2. Once you enter a blue or black BIOS settings menu in the right-most corner, there is an option “EXIT” once you press this, it opens a window that shows the Restore to Defaults option.
  3. Once you press this, it will ask you again. Press “yes,” and your BIOS setting will change to factory settings.
  4. Once the BIOS is reset, your computer will restart automatically, and the HP monitor will start working properly.

Sometimes resetting doesn’t work, and you must update BIOS settings. It is easy and simple,

Fix 7: Cleaning the RAM

If your PC RAM is dodgy or dusty, you’ll get issues with the HDMI output. GPU Card comes with its VRAM, but flawed system RAM will still lead to display issues.

Therefore cleaning the RAM should be the priority for fixing Samsung monitors that do not detect HDMI. Cleaning the RAM is easy; all you need to do is,

  1. Unplug the power
  2. Unscrew the PC covers and remove them
  3. Locate the RAM slots, usually next to the fan on the processor.
  4. Unplug the RAM by pressing the hinges and removing them.
  5. First, clean the dust with air or a piece of cloth, and then carefully spray recommended Isopropyl alcohol (For Electronics).
  6. Next, brush the gold contacts with a toothbrush carefully.
  7. Wait for 10 minutes so that the alcohol completely vaporizes.
  8. Plug in the RAMs in designated places carefully. Slot marks will help you push RAM in place.

Do not Push hard when inserting RAM (they usually slide in easily). A forceful insertion will damage the slot, the RAM, or the motherboard.

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