Computer problems. (see inside) what would you do with these problems?

1. my edit, view, tools – gone.
2. I cannot cut and paste; right click won’t copy.
3. Favorites tag is gone but I have a list of many visited sites;
4. “Mail” is gone ; have to go to yahoo to see envelope which works but does not have the Number of emails next to it;
5. Cannot delete spam emails and they’re piling up.
If you owned this pc what would you do? Service, buy new one and risk erasing yahoo
pictures (which I cannot find)? Thanks!