I have a pc this is it http://www.bestbuy.ca/en-CA/product/hewlett-packard-hp-pavilion-500-pc-amd-quad-core-fx-770k-1tb-hdd-8gb-ram-amd-radeon-r7-240-windows-8-1-english-500-419/10324420.aspx?path=1d5ac8fb341b596254294d752a261a78en02. I was wondering if someone could look at the specs or figure out if I can put a new psu and a new GPU like a gtx 760 or 750 in it because I can't tell if I can upgrade those parts?