Toch screen

I have a touch screen bought through ebay, ebay item number 171953596689.

I need a little help please getting it working.
I have found where to download the library componenets and have tried to use the test program "Graphicstest"

When I try to upload it I get the message

"Arduino: 1.6.8 (Windows 10), Board: "Arduino/Genuino Uno"

In file included from C:\Users\Jeff\Documents\Arduino\libraries\TFTLCD-Library-master\Adafruit_TFTLCD.cpp:19:0:

C:\Users\Jeff\Documents\Arduino\libraries\TFTLCD-Library-master\pin_magic.h:282:33: warning: backslash and newline separated by space [enabled by default]

#define read8inline(result) { \

^

Sketch uses 24,236 bytes (75%) of program storage space. Maximum is 32,256 bytes.
Global variables use 530 bytes (25%) of dynamic memory, leaving 1,518 bytes for local variables. Maximum is 2,048 bytes.
avrdude: ser_open(): can't open device "\.\COM3": The system cannot find the file specified.

Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions."

With verbose enabled I get

"Arduino: 1.6.8 (Windows 10), Board: "Arduino/Genuino Uno"

Sketch uses 24,236 bytes (75%) of program storage space. Maximum is 32,256 bytes.
Global variables use 530 bytes (25%) of dynamic memory, leaving 1,518 bytes for local variables. Maximum is 2,048 bytes.
C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -PCOM3 -b115200 -D -Uflash:w:C:\Users\Jeff\AppData\Local\Temp\buildac353f2e19647ab36d0446b61d0e850c.tmp/graphicstest.pde.hex:i

avrdude: Version 6.0.1, compiled on Apr 15 2015 at 19:59:58
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch

System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"

Using Port : COM3
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: ser_open(): can't open device "\.\COM3": The system cannot find the file specified.

avrdude done. Thank you.

Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Can anyone help please?

Is your Uno recognized in Device Manager? I suspect not.