Second monitor detected but blank

[MidoSaid]

I have a second monitor connected to my all in one desktop. It was working fine till recently start to blinking 

but now it's black

The second monitor is showing in my device manager and display setting

I have tried to update the graphic card

I have tried to use the monitor on another computer it's working fine and the HDMI cable as well

When I start the computer the second monitor shows the HP logo but once the windows starts it show HDMI Signal:Inactive and then it goes to sleep 

System info:

System Model HP ENVY All-in-One 27-b1XX

Processor Intel(R) Core(TM) i7-7700T CPU @ 2.90GHz, 2904 Mhz, 4 Core(s), 8 Logical Processor(s)

Installed Physical Memory (RAM) 16.0 GB

Nvidia Geforce GTX 950m driver

Please help 

Thanks

 

[Riddle_Decipher]

@MidoSaid Seems like an issue with the port on the AIO desktop, I suggest you upgrade the graphics card, Chipset drivers and the BIOS using the HP Support assistant, or by clicking here to access the HP website.

If nothing works, Install the latest version of the HP Hardware diagnostics (UEFI) on your device using this link: Click here for details

• Hold the power button for at least five seconds to turn off the computer.
• Turn on the computer and immediately press Esc repeatedly, about once every second. When the menu appears, press the F2 key.
• On the HP PC Hardware Diagnostics (UEFI) main menu, click System Tests.
• Click Extensive Test.
• Click Run once, or Loop until error.
• While the test is running, the time remaining and test result for each component display on the screen.

If a component fails a test, write down the failure ID (24-digit code) for when you respond back to us.

P.S: Welcome to HP Community 😉

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.

[MidoSaid]

I have updated the graphic card, chipset, and BIOS and did Extensive test with no errors everything passed 

and still not working 

[Riddle_Decipher]

@MidoSaid Did you reduce the screen resolution and check if it's detected? If not, the port could have failed and I suggest you talk to HP support and discuss your options, follow the below steps to get started:

1) Click on this link - http://www.hp.com/contacthp/

2) Click on Sign-in or select the product using the below step:

3) Enter the serial of your device.

4) Select the country from the drop-down.

5) Click on "Show Options".

Fill the web-form, to populate a case number and phone number for yourself!

Also, if you are having trouble navigating through the above options, it's most likely because the device is out of warranty, if yes? please send me a private message with the region you are contacting us from, 

here's how private messages work: Click here for details.

If you wish to thank me for my efforts, you could click on "Accept as solution" on my post as the solution should help others too.

[MidoSaid]

The port is not failed because it works fine in safe mode and while loading the system 

it just cuts off once windows load 

[The_Fossette]

@MidoSaid 

I recommend you contact support to further diagnose the issue. They will be able to take remote of your computer and check this for you.

Cheers!