Windows 8.1 HDMI output not working at all

Anonymous

Hello,

I recently purchased a new laptop with Windows 8, which I had never tried before (so I am new to this). I updated to 8.1 the other day, and afterwards I tried connecting the laptop to a brand new LG HD TV through the HDMI ports. I opened the "Project" menu and selected "Duplicate", and while I see something change on my laptop screen (it flickers, and the resolution/colours change), the TV picks up no signal.

The HDMI port on the TV is working correctly (tried it with another device), and so is the HDMI cable. There is some sort of connection happening because the TV enables the HDMI input only when something is detected on the other side of the cable.

I have seen that it might be a known issue with Windows 8.1, but I can't find a solution anywhere. My laptop has an integrated Intel GPU as well as an nVidia GeForce 740M, and I thought perhaps the problem was that it uses the Intel card as a standard, only switching to the nVidia when necessary, but the HDMI is "controlled" by the nVidia. So I've tried disabling the integrated GPU (to no avail - it just switches to the Microsoft Basic one rather than to the better card - this has been checked through dxdiag), as well as uninstalling and reinstalling the nVidia drivers (which were up to date to begin with). I have checked the BIOS to see if I could change the priorities, but there was no option like I see on my Windows 7 desktop.

Is there anything else I can try? It seems really silly to me that I cannot use the HDMI output at all!

Thank you for any help.

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Answer accepted by question author

Anonymous

Hi Nicholas,

Thank you for the updates.

Since the issue persists, you may try the following steps and check:

Method 1:

Please follow the steps given below to uninstall the display driver.

a) Press Windows key + X key when you are at desktop.

b) Select Device Manager.

c) Find and double-click Display driver from the left panel to uninstall.****d) Right-click the device, and click Uninstall.

e) Windows will prompt you to confirm the device’s removal. Click OK to remove the driver.

f) After the uninstallation is complete, reboot your computer.

After you have successfully uninstalled the driver, please go to the computer manufacturer’s website, download the Windows 8.1 display driver for NVidia and check.

Method 2:

You may also check with LG support to see if you need to install any firmware updates for the TV.

You may also try running the Windows Updates and install all the available updates including the optional driver and firmware updates.

Windows Update: Frequently Asked Questions

You may also refer to the articles and check:

Get the best display on your monitor

Connect a second monitor or projector

Hope the information helps. Let us know if you need further assistance with Windows related issues. We will be happy to help.

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Answer accepted by question author

Anonymous

Did the system restore, it did the trick. This is with a Windows 8.1 computer. I can't find the specific upgrade that did this, but it was an automatic upgrade I did on september 9. There was nothing else done this day. other than "Windows Update", so that IS the problem. I hope this helps anyone!

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Anonymous

Thanks bro..

Another solution I have found that

Some graphics cards have their HDMI port a little loose (cant observe).

So put your HDMI plug very tightly in the GDs HDMI port it will

100% work all time.

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132 additional answers

Anonymous

2014-08-05T13:21:26+00:00

HI, i have the same problem, i have a dell inspiron 15 with windows 8.1 and it will not detect my tv. I have reinstalled graphics card and had a look in the BIOS but HDMI is not listed, My friends windows 7 machine connected to my tv no problems, using the same HDMI cable. When will there be a fix for this problem
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Anonymous

2014-08-03T23:40:36+00:00

I wish mine worked right away, but that's just not the case. I'm retired in Uruguay South America. I've been a system builder for over 20 years and a staunch MS supporter even when not safe to do so. I got a good deal on a used laptop that had a bad hard drive. I replaced the hard drive and since I had to wait for my check to come in before buying a new O.S., I loaded Windows 7 Ultimate for 25 days. Then my Windows 8.1 disk arrived and I installed from scratch. I had the intention of using the latest Microsoft had to offer.

On Windows 7 the drivers synched in and ran flawlessly. HDMI was a dream to run with my Samsung HD TV. So, I was shocked when I had the same problems you have all been talking about here.

My Laptop is an HP Pavilion dm4 with dual video using an AMD/ATI Mobility 5400HD plus Intel HD Graphics. The Intel drivers claim the don't support TV, so like many of you I tried to get the dual monitor to work. It won't. I've gone through refusals of the system to re-boot at least a dozen times. Have removed and re-loaded the drivers 4 times with drivers from AMD and from Windows Update.

I'm forced to agree with the others who have asserted that Microsoft seems to have simply lost contact with their responsibility to address issues as they crop up. Maybe contact with the people on the street has also been lost.

We all just want a system that works in a variety of situations. We want one that is flexible enough to load whatever software we wish to run without having to fit someone's preconceived notion of what we should be allowed to run. We don't want to be caught in the middle of corporate wars between giants either.

Give us something that works, or at least acknowledge and fix it when it doesn't. Then, you're earning our faith and support.
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