hello. So i have this head ache for a week, im building a cheap pc for my mum just to run some basic tasks. Athlon2 quad core, asus m5a78 motherboard, nvidia gt630 2 gb graphic card, 500w psu, 4gb x 2 ddr3 samsung ram, 500gb maxtor hdd. And the problem is i cant get onboard and gt 630 grapchics working, only think that pops up on monitor is there is no signal i used vga and hdmi cables brand new and from my gaming system 5 graphic cards one of them is brand new other from working system motherboard and processor aswell even second monitor of my rig nothing helps. Any ideas?