In your Windozer 10, you can go to down near Start where it says "type to search", ignore Cortana and type in
msinfo32
Mine looks a bit like this (click to enlarge)
Above the highlighted line is installed physical memory, yours is likely 4GB
This site says there is only one slot for RAM, and 8GB is supported.
This site, from Crucial, provides for an 8GB RAM stick, and an SSD.
Point being that if you need to expand RAM, &/or install a new or additional drive, through an approved supplier (check with HP), no probs with warranty?
Morning Christina, morning all - this Wizard is off for more coffee
Chris Turner
wizardfromoz