I was using my HP 15 ac-083TX laptop normally and since 3 days it has been freezing suddenly while watching vids or doing any normal tasks. Last night it froze and i had to shut it down by holding the power button but after powering it on is stuck now on a black screen after the windows logo. I ran the SMART status check it passed and Short DST test it failed. I have so much of my personal data and i dont want to lose them. It is still in warranty. What should I do to save my data and to fix this?