White part is the NOT Responding Part while the Black one is the Responding part
Currently I'm not able to use Back screen App button when it is in Portrait Mode, along with typing in keyboard for "I,m,k,o,!" Words (I can use them when I turn my screen on Landscape , because it didn't stay in the Non-responsive parts)
Scroll down to "Still need help? Complete the form to select your contact options"
Scroll down and click on HP contact options - click on Get phone number.
Let me know how it goes and you have a great day!
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