Okay, so just put together a new build with: Gigabyte EP45-UD3P mobo Intel 8500 dual core EVGA 9800GTX Antec 500W 2 rails at 22A each New Rosewill case So I hook it all up, boot it up for the first time, everything powers on except for vid card. So I look to see what's wrong, realize I didn't plug the 6 pin PCI-E from the power supply into the vid card. So I unplug comp and all, plug in the PCI-E, and try to boot up again. Since then, it will power on, and then power off before getting anywhere, and continue to do that nonstop. I'm not necessarilly extremely tech savvy, but I'm assuming either 500W is not enough, or my mobo may be a dud. I tried to boot it up again without the vid card plugged in, and it has the same problem of going on/off nonstop. Any ideas? I'd like to know soon so I can RMA soon if necessary. Thanks!