yn = input ("Does computer turn on?")
print (yn)

yn = yn.lower()

symptoms = ''
response = ''

if yn == 'y' :

   symptoms += "computer turns on\n"

   yn = input ("anything on screen?")
   print (yn)

   yn = yn.lower()

   if yn == 'y' :

      symptoms += "something on screen\n"

      yn = input ("computer boots every time?")
      print (yn)

      yn = yn.lower()

      if yn == 'y' :

         response = "Remove and retry if it works, then Power supply is not enough"

      else :

         symptoms += "computer does not boot every time\n"
         response = "Power supply unstable; replace Power Supply"

   else :

      symptoms += "nothing on screen\n"
      response = "Go to video troubleshoot chart"

else :

   symptoms += "computer does not turn on\n"

   yn = input ("Adequate Power Source & Environment?")
   print (yn)

   yn = yn.lower()

   if yn == 'y' :

      symptoms += "Adequate Power Source & Environment\n"
      response = "motherboard troubleshoot char"

   else :

      symptoms += "Inadequate Power Source & Environment\n"
      response = "Replace Power Supply"

print ("\nFinal Report\n")

print ("Symptoms:")
print (symptoms)
print ()
print ("Response: ", response)