I just hooked up my Xbox with and HDMI cable, however my samsung tv does not read it, and I cannot select the HDMI function in source

You have to check the HDMI cable. In Samsung tvs the HDMI sources only highlights if the a proper HDMI sources is connected to the corresponding HDMI port of the tv. Also check by connecting any other device which have and HDMI connectivity to the HDMI 2 port.
www.electro-medical.blogspot.com
https://www.facebook.com/electromedservices?fref=nf

A USE HDMI CABLE FROM XBOX TO TV AND SELECT HDMI AS THE IN PUT ON THE TV OR USE A HDMI TO AV CONVERTER AND PLUG AV PLUGS IN TV AND SELECT AV IN PUT ON TV

Hi Caleb,
To resolve this, please perform the following steps:

• Turn off the TV and unplug the power cord
• Connect the HDMI cable to the HDMI port of your laptop.
• Connect the other end of the HDMI cable to the HDMI input on your HDTV
• Connect your device using the HDMI connector (Refer to image below)

• Plug in the power cords for the TV and Xbox
• Turn on your TV and Xbox
• Enter the TV Menu and select Setup (Refer to the image and steps mentioned below)

• To enter the TV Menu, press the Menu button on Remote control
• Use the left and right buttons (volume buttons) to move between the icons

Select correct input source

• Input allows you to select the proper source based on how you have your TV and video equipment connected.
• Press Input on the remote to go directly to the Input Select menu
• Select HDMI 1 or HDMI 2 (Refer to image below)

If the TV does not work, please follow these steps:

Verify the PIP/POP/PBP function is disabled ( PIP/POP/PBP Compatibility - The only input sources that cannot work together are HDMI with HDMI)

• Press the Menu button on the remote control or TV
• Use the Left and Right arrow buttons (Vol +/-) to select PIP/POP/PBP, and then press <Enter>
• Use the Up and Down arrow buttons (Ch Up/Ch Down) to select PIP/POP/PBP/OFF
• Use the Left and Right arrow buttons to select Off

If issue is still persists, please move to the next step

Reset the TV current input to its default configuration

• Press the Menu button on the remote control or TV
• Use the left and right arrow buttons to select Setup, and then press Enter/OK
• Use the Up and Down arrow buttons to select Factory Reset, and then press Enter/OK
• Select Current Input Setting and press Enter/OK
• Re-check the TV functionality

Hook your X Box into the Receiver HDMI input with your HDMI cable and another HDMI cable from the HDMI out on the receiver to the HDMI input on your TV.

Your Samsung has an Input Source button on the remote. If you are getting a "No Signal" message, you either have no cable, dish, antenna, or HDMI input to the television or have the wrong source selected. With the television turned on and/or a cable box, dish etc turned on, select all of your sources until a picture appears.

Take the PS3 signal out of the component cables source selector use it with a HDMI cable input put it on it on HDMI port should solved this problems.

The manual is telling you that your "source", whatever you are connecting to a particular HDMI port, needs to be turned-on in order for the TV to detect it. Make sure that the HDMI cable plugged into the correct HDMI port for each device (TV & cable box) and that the cable box is on. Does the cable box HDMI port need to be selected in order for it to be functional or is it on all of the time? Check your cable box instruction manual for details on the proper way to enable (turn-on) or disable the various outputs if needed.

Let me know if you need additional info.

I had the same situation.. I bought a HDMI cable and everything works great....

These are directional...but worked great for me.
. Select Active Series High Speed HDMI Cable with RedMere Technology 25ft...

If Im reading this right what you need to do

is hook the audio from the xbox to the stereo system

not to the tv .

Make sure both the xbox and tv are on and tv is on HDMI source. It won't recognize each other unless xbox is turned on and tv is set to the correct source.