Ok, so my computer was working completely fine last night. But now, this morning, it's not. It boots up, I put in my password, it takes a while to load, and then all I get is the desktop image; nothing else. I wait for a while. The little Microsoft tune plays. All that's up is still the desktop, with no start bar or icons or anything.
I'd really like not to have to make my family pay money, but I honestly have no idea what to do.
EDIT: It's up, but this little error thing keeps popping up every few seconds saying my Norton is trying to run in strange ways. I'm scanning the computer for viruses now. It also seems to be reluctant to connect to the Internet.