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Sound Card and HDMI port stop working at same time

Q: Sound Card and HDMI port stop working at same time

I have a Lenovo thinkpad yoga 14. All of a sudden my HDMI port does not work and my system says there are no audio devices available. When I go to device manager, the sound, game etc option is hidden. I updated my audio driver, in instilled The Conexant audio driver and rebooted my computer, but now it is not getting reinstalled. Every time I try to reinstall that driver, it says no audio device found, cannot reinstall. I?ve even reinstalled windows but even that does not work. Need some help badly!!

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Preferred Solution: Sound Card and HDMI port stop working at same time

I recommend downloading and running DAP. It can help sort out any driver and firmware related issues on your system

It's worked out well for many of us in the past.

You can download it direct from this link http://downloaddap.org. (This link will open the download page of DAP so you can save a copy to your computer.)


Hi there, My sound is not working. I only have a HDMI Sound output. However, I don't have any HDMI Output in my computer. I reinstalled windows a couple of times lately, but i don't know for sure if thats the problem.
Right now im using Windows 7 32-Bit, My hardware specs are: CPU: Intel Duo 2 Core. Graphics Card: AMD ATI Radeon HD 3800 Series. Any help or such will be Very much appreciated

A:Sound not working, Only have HDMI Sound Output, But no HDMI port in PC

the HDMI sound is most likely off your GPU but that series seems to not have a HDMI port so that is odd. If you can make sure your onboard audio is on in your BIOS and also run the tool on this page so that you can update all your system info for us. System Info - See Your System Specs

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Okay so my PC is plugged into HDMI port 1 and my PS4 is in port 2. However when i'm on port one and i turn the ps4 on port one stops working. it works up until that point and it didn't do this with my xbox260 where the ps4 is now. and to get port one to work again i have to unplug the ps4 hdmi cord and then change from hdmi 1 to a random channel and then back to hsmi 1 for it to show up again

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This morning HP Support Assistant offered 4 updates.I updated the Notebook System BIOS (Softpaq number: SP73290 Version F.21Ap1) and the HDMI port for the second display stopped working.When I tried to update the NVIDIA High-Definition (HD) Graphics Driver (Softpaq number: SP72727 Version: that installation failed. Please help me restore the HDMI port. 

A:Update to BIOS caused HDMI Port to stop working

Hi @DougMin?,Thank you for visiting the HP Forums! A great place where you can find solutions for your issues with help from the community!I came across your post about the Notebook, and wanted to assist you! I have looked into your issue about your HP ENVY 15-ae109na Notebook and  issues with updates. You can do a system restore. System restore will help if something automatically updated and did not go well on the Notebook. When performing a System restore please note remove any and all USB devices. Disconnect all non-essential devices as they can cause issues.You could  try using the Windows Update Troubleshooting tool to fix any updates that have not come through for Windows.  Please restart the Notebook twice to make sure all update have been completed!Please let me know how this goes.You can say thanks for trying to help by clicking the Thumbs Up below!.Thanks.

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I have the same problems. Today I updated the Bios of my HP probook 650 G1 to version 1.39 from 1.36
After that my DisplayPort is not working anymore. The external VGA port is working fine.
There is no way to downgrade again. Error message at the end of that downgrading process tells me the digital signature is not valid or the image is damaged. So please HP, fix this problem in 1.39 for all users.
Regards, Marco

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TLDR: Graphics card and wlan card randomly stop working!!

I've posted this on other forums so far no help . so heres my problem. I use my computer on average 3-10 hours a day. I usually play games or im surfing the net. now sometimes my wlan card and my graphics card just stop working. they both dont appear in the device manager, I cant plug in my monitor through the graphics card coz the screen just stays black, and the wireless internet icon on the bottom right of the windows screen just says "no connections available". Im not 100% on this but it seems like this occurs after playing games for long periods of time im pretty sure the games I play arent too heavy for my system (empire:total war, skyrim etc). I took my pc to the repair shop before and everything was working fine when they tried it. I dont think its a problem with the wlan or graphics card coz sometimes they work perfectly, then suddenly they just stop working. when this happens it usually gets fixed when I wait for a day, open up the pc and clean everything then perform a system restore. I have no idea whats wrong. Is everything compatible? could it be overheating? could the motherboard be faulty? Its very unlikely that both these parts just stop working at the same time.

-Sometimes when the wlan card stops working, the light on the card itself isnt lit up, but sometimes it is.

-These problems dont always occur at the same time.

Motherboard: Asus M4N68T-M LE V2
Graphics: R... Read more

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I have a HP pavillion slimline 7720.uk, i have just bought a Nvidia Geforce 8400GS graphics card with HDMI output! I have a sony bravia 32" LCD tv with HDMI input! i have set up the graphics card fine as far as i know, and is working fine through DVI, although when i connect my computer to the tv via HDMI there is no picture at all, i was just wondering if there is any settings i need to change to make the HDMI port on the graphics card work any help would be very much appreciated!!

Stephen Doorbar

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After I installed my new graphics card physically, I switched my display to a Sony LCD TV and plugged it into the HDMI port on the graphics card. After that, I installed all included device drivers and have since updated my Catalyst drivers. Still, I don't seem to have any sound from the TV, though I can still get sound by hooking up my speakers...

Despite that, I'd really like to get sound out of my TV. Any advice? Here are my specs:

Operating System
MS Windows 7 Home Premium 64-bit
Intel Core 2 Quad Q8300 @ 2.50GHz 37 ?C
Yorkfield 45nm Technology
8.0GB Dual-Channel DDR2 @ 399MHz (5-5-5-18)
ASUSTeK Computer INC. CG5270 (LGA775)
SONY TV @ 1360x768
ATI Radeon HD 5700 Series
Hard Drives
977GB Hitachi Hitachi HDT721010SLA360 ATA Device (IDE) 44 ?C
Optical Drives
High Definition Audio Device


A:No Sound from HDMI Port after installing ATI Radeon 5750 graphics card

Check your sound and see if your device is disabled.

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I was having problems with Windows Themes and aero not working, and finally fixed that by updating drivers. The themes problem is fixed but now I cannot display my laptop on my TV through the HDMI port. Any ideas?

Update: When I push the connect button, the screen goes black like it always does when first connecting, and then I get the pop up saying I'm not using the resolution for the clone displays configurations, like it used to do before the update. I've tried rebooting, and also disconnected and connected the hdmi cable from my adaptor and still nothing.

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Hi there,

This is my new laptop. I got it just one week. However, USB 3.0 port is very weird. It always stop working when i used it for several hours. I try to update the driver, but i still seems not working.

are there any other solutions?

A:Satellite R830 - USB3.0 port stop working after long time usage

> It always stop working when i used it for several hours.
How do you know this? Is some external device connected and you use it several hours for data transfer or something similar?
And after notebook restart everything is OK again?

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I have a new HDMI monitor connected to my Lenova T460s through the HDMI port on the laptop as the docking station doesn't have an HDMI port. There is no sound coming through the Lenova speakers or when connecting the headphone jack to external speakers. Any thoughts??? Rogertom

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Hi, I've a strange problem with the sound output via HDMI. If my T460 is connected to a dockingstation and my monitor is connected to the station via HDMI cable I've sound output from the speakers. So everything works fine and I can also the monitor as device for sound outpu at the sound options. Then I change only one thing at my setup. I directly connect the monitor with the same HDMI cable directly to the HDMI port of my notebook. The video signal is still transmitted perfectly but the sound is gone. Also the device for sound is gone from the sound options. I've only graphics from the intel on board chip and all drivers are uptodate. I also reinstalled them several times. What can I do to solve this problem? Always use the dockingstation is no option, because I also want to connect the notebook to a TV or so and I can't carry a dockingstation with me all the time. Thanks for help!

A:T460 sound via HDMI with dockingstation, no sound via direct connection to HDMI port

I found a workarround, but it isn't the ideal one.https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T470p-no-sound-via-HDMI/m-p/3807333

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I contacted Lenovo support today and got NO help in answering my question on this T470 Thinkpad. Is the T470 able to support two external monitors at the same time (one) using the HDMI port, (one) using the USB-c port (connected VIA an HDMI adapter lets say) to two 32" LGMA68HY-P 60HZ ISP LED's ( max res 1920 x 1080) that ARENOT 4K displays!!  Man it was like pulling teeth, upside down, in the dark, getting astraight answer from tech support on the issue. It looks like my Pro Dock will be useless in this application. As soon as I plugged in a VGA monitor the HDMI port died. HELP!!

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Hi i have Win XP SP 2 with following config:

866 mhz
D815 Dual Bios
Creative Sound Blaster PCI
EtherLink XL 10/100 PCI Compatable For PC MAnagement

The Problem is when i start my pc most of the time Lan And Sound drivers stop working i try to uninstall and re-install them but no luck... after shutting down my pc for atleast 2 to 3 hours they both start working again please i am sick and tired of this how do i solve this problem and make both of them work regularly...

i need a prof help

A:Lan And Sound Card Stop Working ??? [Help]

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I want to use 2 displays using HDMI, but the only problem is that when I plug in my HDMI to my TV through the motherboard, it does not work. I know some do not support it which is why I am coming here. My mother board and graphics card are in my account so look there for the details on my computer. Thank you

A:Can I use my motherboard HDMI port as well as my graphics card HDMI?

I've seen a number of computers where the addition of an Add-in Video card automatically disabled the onboard adapter. The only thing that worked to restore the onboard adapter was to remove that Add-in card. You may want to consider getting a different Add-in card that has 2 HDMI ports. Or if your motherboard has 2 PCIe X16 slots get a 2nd matching card.

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I have, as I see it, a very unique problem with my computer.
I turn my computer on, and sound works, I can turn on winamp, play music etc.
But, after random amount of time, my sound driver just disappears, when go to
Control Panel and Sound and Audio Devices, it says I have no driver/sound card.

Funny thing is, when I open winamp at the beginning when it works, it continues to play music even when it already says I have no sound, I can even add more stuff to winamp, but ONCE I turn it off, It wont open again because I have no sound drivers!
The amount of time before this happens varies, once it was hour and a half, but not it was only 15 minutes. Of course, Im still listening to music, because I havent turned off winamp yet (although, any other program I start after the malfunction, sound wont work with it).

I tried to reinstall my drivers, but I couldnt find a way how to remove everything from Device manager under "Sound, Audio and Gaming Devices", but nothing changed. When I removed what I could, windows found it as new hardware, but didnt want to install new drivers since "the latest possible version is installed". Sound of course wasnt working, until I installed drivers I downloaded from the net, but then it just returned to where it is now.
Also, right now, device manager tells me everything runs ok, but "Sound" in Control Panel says I have no drivers.

I have no idea what this is, and I want to use system reinstall as... Read more

A:Sound Card (Driver?) stops working after random amount of time

You may be infected with a virus or other malware. What protection are you running?

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I have a hp Pavilion dv5 notebook pc with windows vista home premium. I can't get sound from my hdmi cable to my tv. I've tried going to my
sound properties and switch my default from my speakers device to my hdmi device; but still no sound. The wierd thing is, I clicked the "test" and there was the sound from hdmi cable and I can hear the test "BEEPS" on my tv. However, I tried to play something on youtube and I can't hear a thing. ahh!!! Help please its driving me nuts!

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I need some tech support on this computer/monitor combo…
I have the one monitor hooked up display port-displayport, it works fine.  The second monitor is hooked up monitor-DELL display port-hdmi adaptor, then HDMI cable to HDMI port on computer.  Computer sees the display port monitor only.  both monitors are set to monitor the display port .  Let me know asap, thanks..

I have the dual Dell displays, they only have Displayport and maybe DVI connectors...  brand new Optiplex 3040, had display port and Hdmi ports for video, need them both active at the same time to run the dual display...... OR does dell make an adaptor to run its dual display from one display port?

A:Dell Optiplex 3040 cannot use both HDMI port and Displayport at same time?

Optiplex 3040 onboard video out ports = HDMI, DP
A computer HDMI out port cannot up convert to a monitor DP in port via a straight cable. What you bought is designed to do the opposite; down convert a computer DP out to a monitor HDMI in port.
You would need to add an HDMI to DP Active Converter.
Computer HDMI out --> HDMI to HDMI cable --> HDMI in to DP out converter --> DP to DP cable --> Monitor DP in

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hi, i recently upgraded my HP ENVY 23 from windows 8 to windows 10. my problem is that when i had windows 8 and i plugged my ps4 into the hdmi port everything worked fine. now that i have upgradded to windows 10 i still get the image but there is no sound. is there anything i can do to fix this? thanks

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So, the other day I decided to finally bring my parents into the 21st century and show them the wonders of HDMI... They were amazed. Anyway I plug the cable in and everything goes swimmingly. Until someone (my mom) decides that she wants the TV back to normal. So instead of switching the input on our multisystem TV, she pulls the HDMI cable (quite harshly) out of my computer, by the cable not the plug portion. I'm not sure what she did or how she did it... but my computer stopped reading its own speakers. I freaked and restarted the laptop. It came back on and it read the internal speakers again. Everything seemed okay, until yesterday when I tried to plug the HDMI back in. Now, it wont read the HDMI cable for audio. It transmits the picture, but the sound doesn't come out of the TV it comes out of my computer. I tried going to the speaker tab and opened the mixer, nothing was muted. I opened the device manager and it said HDMI audio was installed, opened that up and it said the device was working properly. I tried opening up the audio window to see if I could manually switch to HDMI and the option wasn't even there. I plugged in my headphones and they work just fine. I'm at a loss here. I'm beginning to think a pin was pulled out along with the HDMI cable the first time. But I don't know if its possible to replace just the HDMI port... Gah... Help me please...
Tech Support Guy System Info Utility version
OS Version: Microsoft Windows... Read more

A:My HDMI Port Won't Transfer Sound :(

if you goto Control Panel - Sound - what do you see for HDMI sound, with the cable connected and then not connected - is HDMI sound selected at all ?

perhaps a screen shot

do you have a different cable you can try ?
To post a screen shot of the active window, hold the Alt key and press the PrtScn key. Open the Windows PAINT application and Paste the screen shot. You can then use PAINT to trim to suit, and save it as a JPG format file.
To upload it to the forum, open the full reply window and use the Manage Attachments button to upload it here.
Full details are here http://library.techguy.org/wiki/TSG_Posting_a_Screenshot

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Hi Folks

First question that I really need an answer for if possible!
I have an HP DX6100MT that i got from work - i installed an NVidia 9600 GT Graphics card. Thing is, in order to play sound from the pc onto my Sony LCD, i apparently need to connect the SPDIF. Fine, no probs, except - i dont seem to have an spdif port on the motherboard - i've looked and looked and nothing seems even remotely similar. I'm wondering if i'm going blind! Can anyone help - could it look or be called anything else? is it even possible that a computer that is like only 3 years old doesnt have an spdif out?

Damsel in distress call for help!


PS: running xp

A:Sound Via HDMI - Can't find SPDIF out port...

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MY screen has VGA hooked up from my graphics card to the TV. Is that why there is no sound? Other than that I put the TV as default sound and no sound.

A:Solved: Hooked up HDMI port and no sound?

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I'm trying to display my PC to my TV but when i connect the HDMI to the PC and TV nothing happens on the computer and it doesn't recognize anything when i go to the display setting and try to set it to the TV. I know the HDMI works because it's the one i use for my PS4, I also know that the TV is on the right source setting. I have updated all of my drivers too. Is the port just broken or what?

Tech Support Guy System Info Utility version
OS Version: Microsoft Windows 8.1, 64 bit
Processor: Intel(R) Pentium(R) CPU N3530 @ 2.16GHz, Intel64 Family 6 Model 55 Stepping 8
Processor Count: 4
RAM: 3977 Mb
Graphics Card: Intel(R) HD Graphics, -2043 Mb
Hard Drives: C: 454 GB (416 GB Free);
Motherboard: Dell Inc., 0F2A20
Antivirus: Windows Defender, Disabled

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Model:17-g101dxS/N:5cd5380vjjMy HDMI port is not registering that there is anything plugged into it. I've tried switching cables and using different device on the cable, everything checks out but the laptop still does not register that there is anything plugged into it. 

A:HDMI port not working

Hi, Please try to hit f4 which tells your computer to send signals to an external device Regards.

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Hi guys, new here. I recently purchased a used HP Pavilion G4 from a friend and tried to plug it into the TV using e HDMI port. When I plug in the HDMI port the computer doesn't say or even recognize that there is a cord plugged into it. The tv also shows no signal. I think it is a driver issue, that a driver isn't installed on the computer. But I have no idea what driver to install. Any suggestions?

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Please can someone help me.
I have an acer predator laptop which has windows 10 installed. My HDMI port used to connect an additional monitor stopped working and I can't figure out why. The Intel HD graphics as well as the NVIDIA graphics are all up to date but it is still not working. The HDMI port is functional as it works when booting into a Linux OS.
Can someone please advise as to what could possibly be the problem

Kindest regards

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I recently unplugged my HDMI cable from my gpu (980ti), once I plugged it back in, the monitor didn't detect any signal. My computer can't find any other monitor, only my main display. Already tried to switch between HDMI cable but still nothing. the HDMI port itself still looks pristine. I don't know why it isn't detecting the second monitor anymore.

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Hi all,

I've just recently got myself a new laptop (specs at bottom of message) and took it around a friends house and plugged it into their HD TV via HDMI - all worked well, the laptop recognised the TV straight away, optimized the display and away we went.

A few days go by and I decided to upgrade my own TV from an SD to an HD TV (Bush BLED24FHDL8) yeah I know cheap as chips, but it's going alright so far ... well except this problem pmsl.

Within 5 mins of setting up the TV channels I decided to plug my HDMI cable into the laptop and then into HDMI 1 slot on the back of the TV, I changed the input of the TV to HDMI 1 and.... nothing.

Going into the display settings of my laptop didn't show a 2nd display, so I changed various settings trying to get it to recognise the tv, but nothing, still no signal showing on the TV, and nothing showing on the laptop.

So I changed over the cable to the HDMI 2 slot on the TV etc and still nothing on the laptop, I fiddled with the settings again and still couldn't get the laptop to recognise there was a 2nd display, nor get any signal on the TV.

As a last resort I unplugged the HDMI cable and tried the VGA cable I have - and this decided to work, although no sound as I didn't have those cables plugged in.

When I plugged the VGA cable in, the TV and laptop recognised each other straight away and I didn't have to do another thing.

But I've still got this HDMI problem --- I've even gone out this a... Read more

A:HDMI port not working on TV or something else?

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I had to change the motherboard of my new PC spectre 360 but when i got it back the HDMI port is not working at all

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The tv worked for all of 15 seconds, then stopped. I have downloaded the recommended drivers with no resolution to the issue.It is as if the HDMI port no longer exists. I cannot find it anywhere in the device list.HP, is this the kind of customer service you want to be known for? I see many comments on this thread for the same issue, yet you have not provided a solution.Quite interesting how this issue occurred shortly after my warranty expired.

A:HDMI Port not working

Hi @Ssniderwin,
Thank you for showing your interest in HP Support Forums. It is a great place to find the help you need, from other users, HP experts, and other support personnel. 
I came across your post about the HP notebook, and wanted to assist you! I have looked into your issue about your HP G62 notebook and HDMI port not working correctly. Try running the Windows update tool - Click here
For more assistance, please go through the support document for HP PCs - Troubleshooting HDMI Display and Sound Issues (Windows 10, 8, 7) - Click here
I hope this helps. Let me know how it goes for further assistance, I'll be more than happy to help.
Keep me posted,
If the information I've provided was helpful,
give us some reinforcement by clicking the solution and kudos buttons,
that'll help us and others see that we've got the answers!
Good Luck.

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i got this laptop for christmas from my wife started using it and started using the hdmi port to stream thru my tv and after i updated to windows ten the hdmi port stop working. edition windows tenos build 1607product id : 00325.80569-42003-anoemprocessor: intel(r) pentium(r) cpu n3540 @2.16ghzram 4.00 gmsystem type 64-bit opreartingx64 based processor please help

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After Win 10 upgrade the HDMI port is not recognized.

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hi there, I was using my HDMI port to connect to my TV on my HP G62 Laptop, and in the middle of it playing, the port just stopped working... Very upsetting as we use it all the time. Any tips on how to fix this?

A:HDMI Port not working

Can you post the exact Model number of your notebook and the current operating system it is running on? Is the HDMI port not working at now?

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One of my HDMI ports on my HP ENVY Desktop - 750-114 is not working for my dual monitor set up. Both of my monitors are HP25VX.In the device manager a yellow triangle shows on both the IDE Controller and on Display Adaptor. When I check the drivers I am prompted that both are working properly and that no updates are available.I am running Windows 10, and I contacted Windows, Their representative said that my problem is not the operating system and is not software and that the problem is hardware and advised me to contact HP for support.Thank you for any help that you can provide.

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HI All

I have moved to Windows 7 from Vista, finally

Computer - HP 8710w, Intel Centrino vPro, Nvidia Quadro

I connected my HDMI cable to TV Hdmi port and PC Hdmi port but no signal on TV at all. With Vista it was plug and play (just needed to adjust audio settings on PC).

I have tried downloading updated drivers but to no avail. While connected pressing the Fn key and F4 hey does nothing, the computer has no idea that something is in that port. I think the port is somehow inactive or physically damaged.

How may i check to see if the port is working and how do i check if its software related?

Many thanks

A:HDMI port not working

Are you running more then one monitor at a time? If you are then you need to right click on your desktop and select "Screen Resolution". Then find the TV on the display device drop-down menu. Then check the box "Make this my Main Display".

Let me know if that works, if not I can help troubleshoot the problem some more.

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I am new to the forums, please take care of me. My friends told me to post problems on this site.

Yesterday, I bought a 10m HDMI cable and I plug it from my TV to my CPU. Everything was fine. The only thing was one of the games which requires Port COM1 and COM2 could not access.

I tried disabling the HDMI sound and it worked. Is there any way to change the COM port for the HDMI sound? I tried going settings on Windows and could not find any.

I just need the sound because it's a music game, from the Arcade. Everything was perfect before plugging my computer to the HDMI.

M:MiCmd: NodeAcs Task Start
M:MiCmd: BoudRate : 57600, ByteSize : 8, Parity : 0, StopBit : 0
M:MiCmd: COM Port 2 Open Error
M:MiCmd: Port 2 : Error 3 Node 2, step 1
M:MiCmd: MicomMain End
W:net: ctrl: sz_buf(4) < 8
M:xrpc: module_add: 0: game.get
M:xrpc: module_add: 1: game.active


A:Port got used by enabling HDMI Sound and cannot enter Game


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Using an XPS Studio 16 recently the HDMI port I have been using to connect my laptop to my speakers has been acting up. After connecting to my speakers the output automatically shifts to the speakers, however there is no audio. When I open the volume control panel it shows audio output being sent to the speakers. So far, the only thing that has resolved this issue is a restart, however after restarting no settings changed from the time when the issue occurred.

I have made sure my speakers are searching for input from the port I have connected it to.

Any help would be appreciated. Also, tell me any information I need to give you in order to help you, help me.

A:HDMI Audio Port Showing Output w/ No Sound

When using HDMI, the HDMI needs to be set as the Default Audio Device in the Control Panel/Hardware and Sound/Sound Panel. If the "Speaker" is set as the default audio device there will not be any HDMI audio.

Best option for Dell support is the Dell community users form, Laptop Section. HERE It is a users helping users forum, like this one, and some very knowledgeable Dell hardware users there.

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New laptop only shows internal card drivers so no chance to switch sound to HDMI. Are there any W10 drivers available for the sound on the HDMI port - image is fine.  Needed for church projection system.

A:No sound to TV from HDMI port Envy Laptop 15-ae107na

@fundif? Try these 2 drivers. "Then reboot." http://ftp.hp.com/pub/softpaq/sp74501-75000/sp74569.exe http://ftp.hp.com/pub/softpaq/sp73001-73500/sp73302.exe REO

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Hello, I'm in IT where I work and we have a few Lenovo P50 laptops. They are all on the same image that I've created but one in particular has the HDMI port that will just not work. I've tried the Thunderbolt firmware upgrade but in order for that to work it says that you must connect it to an external monitor through HDMI and have it displaying which it will not do. Since we've had this one it used to display just fine on HDMI but now it does not. Any ideas for getting the firmware upgraded to see if it helps?

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Hi all, I recently bought a HP Envy desktop 750-103a but can't get the monitor to work using the HDMI ports 0 and 1? I have tried to use the playback devices to recognise it but I don't seem to be able to get anything. Could someone please assist me, I'm not sure what to do. Thanks Rick

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i'm now using displayport to displayport but i want to use Hdmi port to connect to my tv.I already connected my pc to tv using HDMI cable but it's not detected/workingam i missing something or do i need to active an option in bios ?

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Hi everyone I am trying to add a second monitor to my all-in-one computer but the monitor nor the computer seem to recognise that a HDMI cable is plugged in.  The screen I am connecting to is a Dell screen.  When the HDMI cable is in my computer it just flashes black and back tot he main screen again.  Also the second monitor does not receive a signal. Help please, searching and searching for an answer for days! Many thanks

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the Aspire xc-710 come with botg HDMI and DVI port. It was working fine with two monitor until today. The DVI port goes blank and had changed cable as well as swap the monitor, the problem lies with the DVI port at the graphic card not signal. What can I do? 

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I've got a new TV that has a HDMI port, I have a PC with a GeForce GTS 250 graphics card.

I tried connecting my PC to the TV using HDMI cable, it works while booting, works if I boot with Ubunto, but disconnects if I boot with Windows 7, it shows the "Starting Windows" message but it disconnects once it's about to show the user's log on page.

What's the problem out there? I'll appreciate any help.

A:HDMI Port Not Working On Windows 7


I had to run NVIDIA Control Panel then connect my TV to get it recognized.

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Hello,I've been trying for hours to connect my external monitor via HDMI cable, but neither the laptop nor the Monitor sees eachother.I updated monitor's firmware to the latest and no result. Still, my computer displays that there is nothing plugged in the HDMI port when I insert HDMI cable. The monitor sees that I have plugged in something in the HDMI port, but doesn't receive any signal from my laptop.Would you please advise if there is any solution to this specific situation?Also, be advised that even with the latest video driver downloaded from your website, I am still unable to play on OpenGL video mode. I am looking forward to your reply.  Many thanks in advance,

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I have a Dell Inspiron 720 with an HDMI port in the back. I have been using it with my Samsung TV to watch movies on. Now it no longer works. I ordered a new cable but it keeps telling me to check power supply, cable connection, and the make sure it's on the right setting. I have 2 hdmi ports on the back of my TV but still come up with the same error condition when I switch them. It appears the port in the computer is not working anymore. I have tried everything but nothing works. I am running an ATI 4200 which is on the motherboard. Can this be fixed or would I have to buy a new graphics card to get it working again. I did swap the cables but still get the same results. Does anyone have any ideas because I have run out of them???

A:HDMI Port not working anymore

The only way to fix it is to buy a new motherboard, do yourself a favor and buy a new video card instead, Dells are not worth fixing. But if it`s under warranty well then that is a different story.

If that`s a laptop then your ONLY option is to replace the motherboard, very simple to do.

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What keeps telling you to check the power supply ???

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