If you have your graphic card plugged into the right slot everything *should* power up and you *should* have display video. But when building your own rig it is really moment of truth time when you press power. You get to find out if all your components are going to play nice together.
Now if you are not getting video - you get to troubleshoot - I would recommend connecting the motherboard outside of the case for ease of access. Work on a good non-conductive surface (usually the placing the motherboard on the box it came in will work in a pinch) - plug in the processor and processor heatsink - plugin one stick of ram - and plugin the video card. Plugin power switch to connectors on motherboard (or if you don't care you can short the ends with a paperclip or end of a flattip screwdriver). Without
plugging your powersupply to main power, connect all components that need power (there should be at least 2 on your motherboard, maybe 3, read your manual) and maybe one on your video card. Plug powersupply into main power - make sure powersupply is turned on (some have toggle switches on them some don't) - cross fingers and hit power button/short connection.
If you get video now then put motherboard in case and add components - install os - until you have a completely working machine
If you do not have video some of your components do not like each other or you may have gotten a bad piece.
Edited by AngryRaisin, 28 June 2013 - 03:52 PM.