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    Win7 doesn't recognize 2nd video card

    MB: ASUS P7P55D-E Video Card #1 PCI-E 2.0 x16: EVGA 768-P3-1360-TR GeForce GTX 460 Video Card #2 PCI-E 2.0 x4: SPARKLE SX84GS256D2LDPP GeForce 8400 GS O/S: Windows 7 Home Premium I just installed the 8400GS so I can drive a 3rd monitor. But Device Manager doesn't see the new card, only the...