gaiming pc

Hi i am planning to buy this monitor AOC C24G1 24“ and iv Heard from some people that it supports 144hz HDMI and other say you need a DisplayCable to run it at 144hz or it will be locked at 120hz is this true? Cus i dont have a Displayport on my pc? Can anyone give me an real and honest answer here?

Hi..i have a HP Compaq nc6000 it turns on automatically when plug in and it won't boot..the fan spins..wifi and charging led is lighting up..but the power led isn't working.. sometimes it boots normally and only power led lights up but after windows boot loader it beeps continuously and nothing...