Microsoft occasionally pushes a generic USB Wi-Fi driver that breaks the F5D8055. To stop this:
Click and navigate to the folder where you extracted the setup files. Specifically, look for a subfolder named "Drivers" and select the Win7 version (choose x64 for 64-bit Windows or x86 for 32-bit). Complete Installation :
If Windows Update fails, you must manually install the Ralink driver. The specific chipset inside the F5D8055 v2 is usually the or RT3070 series.