He opened the Device Manager. Under "Other Devices," a yellow exclamation mark sat next to an ominous label: Unknown Device.
: Ensure the mode is enabled by running ncpa.cpl , right-clicking your connection, selecting Configure > Advanced , and setting 802.11n Mode to Enabled . Broadcom 802.11n driver - HP Support Community - 5890998 broadcom 80211n network adapter driver windows 7 64 bit 11
Note: As Windows 7 has reached End of Life, official support links are slowly being archived. If a manufacturer link is broken, searching for the specific Hardware ID (DEV number) is your best backup plan. He opened the Device Manager