When you buy a generic USB Wi-Fi adapter labeled "802.11n," you are rarely buying a product made by a single, recognizable brand. Instead, these adapters utilize chipsets from manufacturers like:
If you desperately need Wi-Fi, boot a lightweight Linux distro (Puppy Linux, Lubuntu) which includes legacy 802.11n drivers out-of-the-box. 802.11n wifi driver for windows 7 32 bit
netsh wlan show drivers