are both 480s the same brand? i cant remember.. Try one at a time, and alternate. if it will boot with one as opposed to two, then you may have a faulty card, rail, pcie slot, or a ton of other issues. like mcpetrolhead said, just switch stuff out and see what works
| CPU | Motherboard | Graphics | RAM |
|---|
| Phenom II 1090T BE | Asus M4A89GTD PRO | MSI GTX 460 1gb underwater | Corsair XM3 1333 10660 MHz(8 gb) |
| Hard Drive | Optical Drive | OS | Monitor |
|---|
| 2 Seagate Barracuda 7200 3Gb/s 1TB each | LG sata dvd+rw | windows 7 ultimate x64 | Dell 2005fpw/Samsung Syncmaster |
| Keyboard | Power | Case | Mouse |
|---|
| logitech g15 v1 | XFX 850w Black Edition | Corsair 800D | Microsoft Sidewinder |
| Mouse Pad |
|---|
| Banshee Pad |
| View all |
hide details
| CPU | Motherboard | Graphics | RAM |
|---|
| Phenom II 1090T BE | Asus M4A89GTD PRO | MSI GTX 460 1gb underwater | Corsair XM3 1333 10660 MHz(8 gb) |
| Hard Drive | Optical Drive | OS | Monitor |
|---|
| 2 Seagate Barracuda 7200 3Gb/s 1TB each | LG sata dvd+rw | windows 7 ultimate x64 | Dell 2005fpw/Samsung Syncmaster |
| Keyboard | Power | Case | Mouse |
|---|
| logitech g15 v1 | XFX 850w Black Edition | Corsair 800D | Microsoft Sidewinder |
| Mouse Pad |
|---|
| Banshee Pad |
| View all |
hide details