Did not work

[Ana234]

Desktop doesn’t work,we check all cables and screen and on screen just write what HDMI CABLE Not found .I bought a desktop one year ago and I use it just for school,I don’t know what happened . I paid 600$ for one year of  computer working?

[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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[Ana234]

HP Pavilion Gaming Desktop TG01-2170m CTO

Product

3V2Z3AV

Serial

2MD20240QM

[Prométhée]

ok

but sorry

https://support.hp.com/us-en/product/hp-pavilion-gaming-desktop-pc-tg01-2000a/2100367769/model/21007...

this tells us a CTO model, which is a model with multiple configuration
but no information here

you have to confirm a few points, model of the graphics card, motherboard, processor etc.

and if anything in particular could have been done before, any signs of trouble etc

possible :

AMD Radeon RX 5500 4GB FH PCIex16 G6

AMD Radeon RX 5300XT

NVIDIA GeForce GTX1660

NVIDIA GeForce GTX1650

NVIDIA GeForce RTX3060 Ti

AMD Ryzen5-5600G

AMD Ryzen7-5700G

AMD Ryzen3-5300G

etc

Erica6, motherboard

if a graphics card is already installed
you can already perform the test, if the motherboard / processor allow it
remove the graphics card, and connect the monitor to the video port of the motherboard

https://support.hp.com/us-en/product/hp-pavilion-gaming-desktop-pc-tg01-2000a/2100367769

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