|I would uninstall Symantec....not a good AV anymore like previously drilled into people because they paid to have the trial bundled in all new PC's.|
Use the norton uninstaller from their website to remove it or NOTHING else will work properly.
There are many free AV's that are good. The one I have used for almost 9 years is Avast.
Your PC is full of spyware, trojans, rootkits and possibly keyloggers, try the following.
2- Trojan Remoer
3- Hitman Pro
You can google for those or find most of them in the red link of my signature on one page for easy access.
Some HELP in posting on Computing.net plus free progs and instructions Cheers