Please try these recommendations:
Update your router's firmware to the latest. Do a manual download from Netgear's site and to update it, make sure that you use a wired connection.
Disabled the problematic Wireless Network Adapter's power saving mode from Device Manager, locate the Network Adapter=> Properties=> Power Management Tab, in here you may disable any Power Save mode options by unchecking them off.
From your wireless computer pls. install and run Xirrus Wi-Fi Inspector
Click on the 'Show Networks' to display all wireless networks on the xirrus icon on your desktop of if you have one running in a corner. Tap the Printscreen key on your keyboard, open up Paint then choose Edit from the Menu and select Paste, then SAVE it. Upload and attached it here, click on Go Advanced and locate Manage Attachments Tab and attached the file.