HDMI Cable Laptop to TV giving 'NO SIGNAL' message?

pooki23

Honorable
Apr 19, 2013
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Brand new hdmi cable connecting up my laptop to Samsung TV is giving 'no signal' message. It says check connected device's power, cable connection, and source selection. Any help gratefully received!
 

pooki23

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Apr 19, 2013
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Hi - think i should be called mcnumpty, but can you tell me how to set the laptop to external display? Sorry, am bit of a technophobe.....thankyou!
 
either in the bios--set it to both internal and external

so you see display on laptop and tv at same time

or theres normally a toggle key you can use in windows

usually the fn + f5 or fn + f4 keys

the correct f key will have a little monitor icon on it

think on my ibm you pressed fn + f5 but different makers may use f4 etc

press the keys to toggle through internal--internal and external--external only
 

fixedit101

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Sep 18, 2013
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"no signal check connected devices power cable connection and source selection"

I just had this same error. After some online and telephone tech support that went nowhere, I found a post of a guy saying he fixed it; all he did was unplug his cable box from the power.

To fix the error with my TV (PC, Blu-Ray Player, and PS3, all hooked up with HDMI recieving the same error), this is what I did:

1.Power on TV and Blu-Ray Player (or any other HDMI connected device _should_ work).
2. Make sure it's all on, TV set to recieve signal from whatever input (mine was set to HDMI1)
3. Rip both devices from the power, or switch off the power plug. Yes, turn them all off at the same time in the worst way possible.
4. Plug them back in/turn your power bar back on
5. Watch some crazy wizard magic happen.


I think it was some sort of problem in the mechanism where the HDMI devices were authenticating/handshaking.

The forced reset caused a disaster that the TV was forced to reset everything for on a hardware level.


TV doesn't work? Rip it from the power while it's still on. Plug it in again, and BAM! WIzard magic.

I had the LN55c70 LED 3D TV, everything was working except the HDMI inputs (VGA, USB, all worked).
 

DrGelmir

Reputable
Dec 4, 2014
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hey, I got exact the same problem. I solved it by going to device manager, right click on 'display adapters' and then select 'scan for hardware changes'. (Asus n76, windows 8.1, TV: Samsung)
 

dalila41

Reputable
Dec 29, 2014
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This is crazy! I tried your solution and it worked. It's so easy and dumb at the same time. I was going crazy watching all kinds of youtube videos and yours was the most effective by far. Thanks fixedit101. xx :):love:


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"no signal check connected devices power cable connection and source selection"

I just had this same error. After some online and telephone tech support that went nowhere, I found a post of a guy saying he fixed it; all he did was unplug his cable box from the power.

To fix the error with my TV (PC, Blu-Ray Player, and PS3, all hooked up with HDMI recieving the same error), this is what I did:

1.Power on TV and Blu-Ray Player (or any other HDMI connected device _should_ work).
2. Make sure it's all on, TV set to recieve signal from whatever input (mine was set to HDMI1)
3. Rip both devices from the power, or switch off the power plug. Yes, turn them all off at the same time in the worst way possible.
4. Plug them back in/turn your power bar back on
5. Watch some crazy wizard magic happen.


I think it was some sort of problem in the mechanism where the HDMI devices were authenticating/handshaking.

The forced reset caused a disaster that the TV was forced to reset everything for on a hardware level.


TV doesn't work? Rip it from the power while it's still on. Plug it in again, and BAM! WIzard magic.

I had the LN55c70 LED 3D TV, everything was working except the HDMI inputs (VGA, USB, all worked).
 

JIR

Reputable
Feb 17, 2015
2
0
4,510
0


 

JIR

Reputable
Feb 17, 2015
2
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4,510
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Many thanks. I must have pressed F5 in error to lose the TV-laptop connection, and I spent ages scratching my head before looking for an answer on-line. Pressed F5 and lo and behold the TV image reappeared.
 

glennhoskins

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Jun 27, 2015
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I actually went to the device manager, clicked on display adapters, disabled the device and then re-enabled it...and poof...my second screen is back!
 

Ficus

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Dec 5, 2015
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Kinda grave digging because google brought me here. I had the same problem, and magically solved one first time with the "remove power plug" suggestion. Unfortunately, the problem happened again, and I wasn't able to solve it again with the same method. Some more searching, and I found this guide which worked the first time I tried it: http://support-us.samsung.com/cyber/popup/iframe/pop_troubleshooting_fr.jsp?idx=164135&modelname=PN43E450A1F&modelcode=PN43E450A1FXZA

I will copy/paste it for reference:

To Connect your laptop to your TV with HDMI follow these steps below:
Make sure your TV and laptop are off.
Connect an HDMI cable from the HDMI Out on your laptop's video card to any of the HDMI inputs on your TV.
If you are using any other HDMI input besides HDMI/DVI 1 input then the audio will need to be transfered through the HDMI cable. If you are using the HDMI/DVI 1 input you will be able to connect a mini stereo to mini stereo cable from the audio output on the laptop to your TV's DVI audio input for audio.
If you are using the laptop's speakers or have your laptop connected to separate speakers, you can skip this step.

Turn on your laptop.
Turn on your TV.
Press the SOURCE button on your remote or on the front panel of your TV to select HDMI 1 (unless you have selected a different HDMI input).
Press and hold the FN key (usually located in the lower left side of the laptops keyboard) and, depending on your laptop, the F5, F7, or F9
 

arugana

Commendable
Mar 8, 2016
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1,510
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I'm having the same problem. Rolling back the drivers, and then updating them again fixes the problem - But then every time I log into Windows I have the same problem and need to go through the roll-back > update process each time. Any help? Is there a way I can lock the display drivers so that Windows won't mess them up?

I use a Windows 8.1 laptop, and I'm connecting to a 51" Samsung Plasma TV via HDMI cable.
 

Bathtime69

Reputable
Jan 17, 2016
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4,510
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pjqozcfm

Commendable
Mar 14, 2016
1
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1,510
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Just posting to say that fixedit101's "brute force" solution worked for me too. Unplug it all while the devices are on, and, magic, it's back.

Thanks!
 

Smasymo

Commendable
Jan 26, 2017
4
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1,510
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I fixed my problem with hdmi out my motherboard ga ma 78gm us2h with built in graphic card ati radeon hd 3200 after 10 days i was no sleep by those steps:-
1- make Bois vga out on (D-sup / HDMI) or (vga /HDMI).
2-unplug all cables inside motherboard i mean power supply cables, data and sata, front panel cables and try with minimum cables inside motherboard may be something conflict with other like me
3- Try another HDMI cable
I hope it is works with you guys last thing i found that ccc version is not important because hdmi out work like vga (d-sup) thats what i noticed in final
Good luck
 

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