HP All-in-one not detecting secondary monitor

[thecosmos1]

My HP all-in-one will not detect a connected monitor at all. The hdmi cable is brand new and is connected to the one HDMI port on both the secondary monitor and the all-in-one itself. 

[Prométhée]

Hello

[start]This is an automatic response
in order to avoid writing the same thing each time

Some elements may therefore not apply to you 
To be able to answer you effectively, we need some information

we need the exact model of your computer, and the product number
To find it follow this
for a desktop computer

HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support
and for a laptop
HP Notebook PCs - How Do I Find My Product Name or Number? | HP® Customer Support

Give the full name with the product number P / N

this is not a model:
HP Desktop M01-F1xxx
the requested product number must look like this
Product Number: 9EE50AA # ABA
the model corresponding to this number will therefore be
HP Desktop - M01-F1033wb

Give the full version of windows

for windows 10 type winver in the search box
if you give the best information
your problem could have a solution more quickly (depending on the difficulty, of course)
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[banhien]

@thecosmos1 

What is your HP AIO machine ? HP does have

• some AIO machines do not have HDMI port at all
• some AIO machines only have HDMI in port
• some AIO machines only have HDMI out port
• some AIO machines have both

Does your machine have HDMI out port ? You need that port to connect to an external monitor.

If not, you can use a Displaylink Certified USB-A to HDMI adapter such as

                                     USB to HDMI Adapter

to connect.

Regards

[Prométhée]

---

@Prométhée wrote:

Hello

[start]This is an automatic response
in order to avoid writing the same thing each time

Some elements may therefore not apply to you 
To be able to answer you effectively, we need some information

we need the exact model of your computer, and the product number
To find it follow this
for a desktop computer

HP Desktop PCs - How Do I Find My Model Number or Product Number? | HP® Customer Support
and for a laptop
HP Notebook PCs - How Do I Find My Product Name or Number? | HP® Customer Support

Give the full name with the product number P / N

this is not a model:
HP Desktop M01-F1xxx
the requested product number must look like this
Product Number: 9EE50AA # ABA
the model corresponding to this number will therefore be
HP Desktop - M01-F1033wb

Give the full version of windows

for windows 10 type winver in the search box
if you give the best information
your problem could have a solution more quickly (depending on the difficulty, of course)

---

To answer you precisely @thecosmos1  you will need the exact model of your computer

this allows  to check what your connection possibilities are