You can download NVIDIA's all new Nforce 15.53 WHQL Windows 7 64-bit motherboard driver.
Windows 7 64-bit Driver Versions:
  • <LI itxtvisited="1">Ethernet Driver (v73.20) WHQL <LI itxtvisited="1">Network Management Tools (v73.16) <LI itxtvisited="1">SATAIDE Driver (v11.1.0.33) WHQL <LI itxtvisited="1">SATARAID Driver (v11.1.0.33) WHQL <LI itxtvisited="1">RAIDTOOL Application (v11.1.0.30) <LI itxtvisited="1">SMBUS Driver (v4.74) WHQL <LI itxtvisited="1">SMU Driver (v1.71) WHQL
  • Installer (v7.57)
Supported:

nForce 7 series:
790i SLI, 790i Ultra SLI, 780i SLI

nForce 6 series:
680i SLI, 680i LT SLI, 680a SLI

nForce 5 series:
550, 570 Ultra AMD, 590 SLI AMD, 570 SLI AMD
Download:
NVIDIA Nforce 15.53 WHQL Windows 7 32-bit
NVIDIA Nforce 15.53 WHQL Windows 7 64-bit

SOURCE : GURU3D