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.

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments

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.

0 comments

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!

0 comments

Answer accepted by question author

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.

0 comments

132 additional answers

Anonymous

2016-02-17T10:48:44+00:00
This was also driving me nuts.

I'm running Windows 10v1511 on Alienware, with NVIDIA & Intel display drivers.

Here's what worked, with the help of the many posts, troubleshooting, and pure luck.
- Did a 'reset' of the TV by yanking power cord when it was on.
- Uninstalled all resident GEFORCE EXPERIENCE software from Control Panel Programs.
- Unistalled NVIDIA drivers from Device Manager. (Did not reinstall GEFORCE.)
- Updated Intel display driver. (you may have to uninstall 1st)
- Rebooted multiple times, and NVDIA came back to Device Manager. Updated that driver.
- Rebooted, turned on HDMI port from TV, and it works again, after about 5 HOURS of troubleshooting.
Best of luck; seems Windows 10 is a little better, but not perfect. My rig seemed to hiccup on auto-updates from NVDIA GEFORCE, as the HDMI was working fine, until it didn't...
Was this answer helpful?

1 person found this answer helpful.

0 comments No comments
Anonymous

2014-10-04T15:04:46+00:00

This used to work the first time I had the problem. Does not work anymore. I wonder if the problem might be connected to my partial installation of a Dell Printer driver. I have attempted to install a printer driver from Dell on two occasions. On both occasions it only installed partially. I have had the HDMI problem twice as well. The second event with the HDMI was right after the second attempt to install the printer driver. I uninstalled the printer but who knows if it really un-installed all the software and what the driver changed in the process. Thoughts anyone?
Was this answer helpful?

1 person found this answer helpful.

0 comments No comments