Cheap pc rebuild?

[mdeze]

Hello everyone,

The computer I've had so far is the HP pavilion p6130f. And it finally broke down yesterday. I'm pretty sure its a Ram issue because while attempting to fix it following a video online (linked below), I heard 1 long beep on repeat when I pulled out all the rams and ran it.  So I figured I'd just rebuild it. I'm planning to get a new motherboard, CPU and Ram (linked below). I was just wondering if I could possible reuse the chassis, hard drive and psu (300W) from the original. Would that work? Thanks all^^

Usage: This computer is mainly used as a TV replacement so nothing more than a few videos are gonna be played on it. 

Video: 

Parts I'm thinking of buying: https://ca.pcpartpicker.com/list/469wjc

HP Pavilion p6130f: http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c01775369-28