ok so when i first turn on my computer, a display of my motherboard appears and then it runs through the bios and stuff. last night my pc was working just great. this morning i turned it on and it just stayed on this screen, there is no way i can get to the os because it doesnt load. is something unplugged or could something of gotten corrupt? please help i built this computer and i really dont want to have to get a new part.

Make sure all the component parts are seated in their respective slots correctly. Make sure all power leads are connected properly as well...

If what wombat says doesn't help, then try to clear the CMOS from your motherboard manual (switching the correct jumpers). That might reset the BIOS so as to finish loading.