runchey10,
Did you recently install/reinstall the operating system? How to Download and Install Drivers in the Correct Order
Did you setup your wireless router? Make and model of your wireless router is helpful. How to login to your wireless router and use these Recommended Wireless Router Settings I use channel 11. I would suggest making a new SSID to make connecting easier. Here is setup with pictures. Setting up/Troubleshooting a Wireless Network
Your adapter is the Dell Wireless 1704 802.11b/g/n (2.4GHz). This adapter work ONLY on 2.4GHz
Try...
Go to start > device manager > advanced > bandwidth capability > change to 20/40mhz
Rick