I can not open anything on my computer.

I have Window Vista and it will not allow anything to run. It shows that I am connected to the internet but I can not run any programs including explorer or mozilla firefox. I can login in under safe mode but even there nothing opens. It appears everything has been dumped into my trash can. In safe mode I restored everything one by one and closed then tried to login in but it said I could not login so I went back in under safe mode and everything was back in the trash can. I worked with Norton who I have my protection through and they could not help me because I could not open the internet...What am I to do besides throw my computer away.

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