Bought a new tower and hooked everything up and the monitor screen stays black.

[CATLADY379]

I hooked up our new HP Gaming desktop TG01 and the monitor stays black.  The green led light on the tower and the fan are on but other than that I hear nothing.  When I disconnect the monitor cord from the tower it says no signal so I don't think it is the monitor.  I'm not very techinically inclined so I'm out of ideas.

[BeemerBiker]

I believe you have a graphics card.  Be sure to connect the monitor to the graphics card and NOT to the motherboard graphics connector.  Video from the motherboard is disabled when a graphics card is used.

Otherwise check  warranty  here 

let tech support know of a problem

1) Click on this link -
https://support.hp.com/us-en/contact-hp
2) Select your product type below.
3) Enter the serial of your device.
4) Select the country from the drop-down.
5) Select the chat or get phone number options based on your preferences.
6) Fill the web form and proceed further.