Screen 1

Solving Method
This screen had a man staring at the camera and, besides the regular TV noises, there were some beeping sounds playing in the background.

The Morse Code
The beeping noises were Morse Code, and after translating them into text, they revealed the inverted text: Reverting this string of text resulted in:
 * SRIAHCSRAILYMNOPUSNROHTFONWORCSIHTRAEWITIEMSDNEREVENTAHTWOHSEHTOTSDNEIRFYMKCABEMOCLEWXIRDNEH

"HENDRIX WELCOME BACK MY FRIENDS TO THE SHOW THAT NEVER ENDS ME IT I WEAR THIS CROWN OF THORNS UPON MY LIARS CHAIR S".

Finding the Songs
"Welcome Back, My Friends, to the Show That Never Ends" is an album from the group "Emerson, Lake & Palmer". Getting the first letters of Hendrix, Emerson, Lake, and Palmer, culminated in the word HELP.

“I wear this crown of thorns upon my liars chair” was part of the lyrics from the song HURT, by Johnny Cash.

The Answer
So the informations we had were:

"HELP", "ME IT", "HURT" and "S".

Therefore our answer is help_me_it_hurts.