Hi,
· When do you receive the script error message?
· Do you receive script error when you are online?
· What is the complete message that you receive?
· Which browser do you use to access the internet?
Method 1: If you receive get script error while using Internet Explorer then follow the suggestion from the link and check if it helps:
How to troubleshoot script errors in Internet Explorer on Windows-based computers
http://support.microsoft.com/kb/308260
Method 2: If you get the script even when you are offline then place the computer in clean boot and check which application is causing the issue:
http://support.microsoft.com/kb/929135
Note: After troubleshooting, make sure to set the computer to start as usual as mentioned in Step 7 in the above KB article.