wont boot except with (windows key, v, and power button)

i have a newer HP ENVY, still under warranty and the company is being less than useful at addressing my problem

the computer got a screen crack when opening on the 1st week of having it. im guessing it got damaged in shipping and i hadnt noticed because i was not deeply inspecting anything. but im a tiny girl and opening a laptop shouldnt crack the screen that much.

anyway this is now the second problem to have cropped up and im making sure its not a result of the first problem. i disabled the touchscreen driver at request of hp so my screen didnt keep flickering and thinking the mouse was clicking everywhere because of the crack.

after about a month of use like this with no issues, my laptop now wont boot occassionally. it'll have a charged battery or be plugged in (the led indicator is on) but the power button will essentially do nothing. ive ran through some troubleshooting with HP cause i thought it might be the battery since they had some battery recalls. however supposedly they checked that once we finally got the computer to boot.

the only way i can get it to come on is by holding the windows key, v, and the power button. then it will slowly come on with a checksum cmos 502 error. but then it'll boot like normal and work perfectly fine until it goes into sleep mode or powers down and then 90% of the time i'll have to repeat this.

any help would be appreciated