Internet Connectivity Issue

[Maddi-Medi]

I am fairly good with computers but really do not know where to start here. 

I have an HP G62 Notebook, with Winodws 7 and wireless interent. Please let me know what else you need!

  I have rather recently encountered the scenario that my computer will be successfully encountered to the internet and when "google.com" is pinged in cmd I do receive a reply and my Internet Explorer 64-bit works but Firefox, Internet Explorer 120-bit and any downloading/uploading from programs (AVG, Windows Updater) fail. 

If running a virus program or Mal-Ware program nothing comes up. This scenario will play out wirelessly or wired.

Please help!

[Geek-9pm]

Internet Explorer 120-bit

Do not use the 120 bit version with Windows 7 64 bit.

[Maddi-Medi]

Thank you for the response, I'm not using that version, because it does not work, on top of the fact that I prefer Firefox.  I can add that not only are upgrades failing to download, but I also cannot use Skype.