0. Restore the computer to 3 days or more ago and try again. (Also, check your MTU value if it is what it should be - required by your ISP).
1. Do you use a router? Try resting it. (Usually there will be a reset button witch you should press and hold for about 50 seconds).
2. Try disabling Firwalls and try again.
3. Check if your HOSTS file only has one line: 127.0.0.1 localhost
4. what do you mean "no data"? Are there red X's where data should be? Can you upload a screen image?