dont get sad
here is the sol.-
1. go 2 the date and time setting.
2. Adjust date and time ,not manually but by sync. it with internet time of ur gmt...look carefully u will find the option there.
3. once done just restart ur pc and see if the date prob. is solved as this is the main cause of ur latter problem.
4. Try running the sites after that...if problem persist then wait for some hr. and try again otherwise format ur windows drive..