Driver ((new)) — Download Dell Optiplex 755 Sm Bus Controller

| Problem | Solution | |---------|----------| | | You downloaded a 64-bit driver for a 32-bit OS, or vice versa. Match your Windows architecture. | | Yellow mark remains after reboot | Right-click → Uninstall device → Check “Delete driver software” → Reboot and reinstall. | | Can’t find the driver on Dell’s site | Use “Windows 7, 64-bit” as your OS filter. The Vista driver also works. | | BSOD (Blue Screen) after install | Extremely rare. Boot into Safe Mode → Roll back driver. |