My mini netbook has virus and it is not letting me to open anything. i have macafee on it, but still unable to do perform anything. How i can remove the virus from netbook? OR how can i restore it to factory defaults?

Be sure your firewall is activated. You can chose to use the windows firewall pre-installed on your Netbook or you can activate the firewall in you anti-virus package.
Run a cleaning software designed for detecting spyware on a regular basis to maintain Netbook processing speed and to remove items picked up by your Netbook while surfing the web. CCleaner is a solid free version of spyware cleaner.
If you suspect malware on your computer because it is running slowly, has strange pop ups or the anti-virus software detects it, then download software designed to find spyware and eliminate spyware. Malwarebytes Anti-Malware, A-squared Free and SuperAntiSpywate Free are free versions of adware removal tool to consider. These tools get rid of spyware when used individually or in tandem. Continue to run the software until all spyware, viruses and malware are removed.

How To Use the Restore Factory Settings CD
1. Make sure to transfer all of the files you want to keep to a USB memory stick or burn to a CD.
2. Put the Restore Factory Settings CD into the CD drive. This CD was packaged with your computer.
3. Confirm you want to restore the factory settings. The computer will begin restoring all settings. Don't disturb your computer, as this process can take several hours. .
4. Reboot the computer to complete the process.