HP Laptop loses connection

HP Pavilion g6. Had been working fine for 2 years. About a month ago I started losing the connection. Shows connected and strength as "excellent".
Have Norton 360. Ran Malwarebytes. Did registry clean up. No change. Added RAM.
Hooked it up with the ethernet from the modem and it works just fine.
Bought a wireless adapter and no change, still not working right.
What could it be?


Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: Intel(R) Pentium(R) CPU B950 @ 2.10GHz, Intel64 Family 6 Model 42 Stepping 7
Processor Count: 2
RAM: 8139 Mb
Graphics Card: Intel(R) HD Graphics Family, -250 Mb
Hard Drives: C: Total - 458069 MB, Free - 401800 MB; D: Total - 14605 MB, Free - 1627 MB; E: Total - 4055 MB, Free - 1103 MB;
Motherboard: Hewlett-Packard, 1695
Antivirus: Norton 360 Premier Edition, Updated and Enabled