Free Drivers For Windows 7
For the suitability of the drivers on your laptop can be selected drivers.Dell Inspiron 5521 System BIOS DriverRealtek ALC-3221 Audio DriverIntel HM77 Chipset DriverIntel Management Engine Interface DriverWireless 1704 802.11b/g/n, Bluetooth 4.0+HS DriverRealtek Card Reader DriverRealtek RTL8105E-V Ethernet Controller DriverWireless 1703/1705 WiFi + Bluetooth DriverAMD Radeon HD 7670M Graphics DriverIntel WiDi Application DriverUser guide installation instructions you can run laptop drivers.