How to install touch screen

hi friends, I would like to know how to install touch screen 5 Inch HDMI Raspberry Pi with dac I-sabre V3, I connect the screen and it remains blank, nose if you have to install some plugins or create a script?
thank you.

Here is the guide to set up this LCD. Make sure the back lite is on and edit the /boot/config.txt file. If that still doesn’t work, also try a different USB cable to power the RPi. My 7 inch version doesn’t seem to need calibration so you probably can skip that part.

https://www.waveshare.com/wiki/5inch_HDMI_LCD_(B)

thanks, but I’m wrong, the screen I have is screen is a " geeekpi 5 inch Capacitive Touch Screen 800 x 480 HDMI TFT LCD"

How do I do it to make it work?

thank you for you time.

start to install the official touch screen plugin and make sure your screen resolution in config.txt matches the capacity of your screen (see @KKMan’s note).
Please note you might also need a usb hid touch driver (not sure if the RPi kernel supports yours by default).

Maybe you can try that on your PC first and see if the screen is functioning correctly. Your PC will probably pick up the HDMI screen and the USB input automatically.

You will need to edit the /boot/config.txt to set the resolution on a raspberry pi.
Add these lines:

max_usb_current=1 framebuffer_width=800 framebuffer_height=480 hdmi_force_hotplug=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 60 6 0 0 0

I think this is the link to the screen you are using.
http://wiki.52pi.com/index.php/5-Inch-800x480-Capacity-Touch-Screen_SKU:_EP-0081