I currently have a HP Pavilion 550-179na https://exdemohut.com/hp-pavilion-550-179na-n8x35ea-as-new but it's a bit slow at gaming. Would I be able to upgrade it changing the gpu to a gtx 1050ti and a 400w psu (probably from evga)? Thanks!
make sure to measure the dimension of your power supply enclosure on your computer case to make sure it is atx compatible.
proprietary cases from mass production brands are sometime not atx compatible so that you have trouble upgrading anything.