Network Connectivity Issue

Hello,

All of the sudden I have limited connectivity on my WiFi network which is working fine with ANY other device!
Please assist. I'll paste the SysInfo below. Thanks so much!

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Professional, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz, Intel64 Family 6 Model 42 Stepping 7
Processor Count: 4
RAM: 4030 Mb
Graphics Card: Intel(R) HD Graphics Family, 1791 Mb
Hard Drives: C: Total - 453413 MB, Free - 400783 MB; E: Total - 18101 MB, Free - 2716 MB; F: Total - 5103 MB, Free - 5091 MB;
Motherboard: Hewlett-Packard, 167C
Antivirus: Symantec Endpoint Protection, Updated: Yes, On-Demand Scanner: Disabled