1. Check whether the errors mssages are caused by virus infections. You can install a free antivirus software. There are indeed some free security tools on the Internet.
2. You can fix the errors or remove the virus by yourself. What you need is some basic computer knowledge and make good use of google search. :0) Then, you can remove the virus manually. Here is a very good article on how to remove computer virus manually and automatically.
http://ezinearticles.com/?Computer-Virus-Removal---How-to-Remove-Computer-Virus-Manually-and-Automatically&id=3458652
PS: Maybe a paid antivirus software is better and more effective on protecting your PC.
Paul Sa., December 2009
