I bought all new parts for a computer from tigerdirect... put it together... and found i had a problem... computer shut down anywhere from 3 to 10 seconds. Took me four hours to figure out the problem... wrong voltage setting on the back of the powersupply. So i fix that... but even though... there was a display for the amount of time the computer was on for. Now... the right setting is set... but... i don't get a picture... its not reading anything from either of the graphics cards! Then if I set the voltage back to the wrong setting... there is a display. Everything is in right... everything connected the way its suppose to. I can't figure it out. What is the problem? Could it be the powersupply? Can this cause something to do with the signal not going to the monitor... but then why does it work in the wrong setting? Please... I need help... I'm bashing my head on this... it doesn't make any sense to me!