Due to virus/malwares the system properties are exchanged . Scan your system with a good antivirus or malware scanner. * [http://www.malwarebytes.org/products/malwarebytes_free/ Malwarebytes] * [http://www.superantispyware.com/portablescanner.html Super antispyware] * [http://www.microsoft.com/security/scanner/default.aspx Microsoft security scanner] * [https://toolslib.net/downloads/viewdownload/1-adwcleaner/ Adwcleaner] '''Note''' : Certain malwares are cleaned in[http://windows.microsoft.com/en-US/windows7/Start-your-computer-in-safe-mode Safe Mode] or By resetting the Windows programs .

There is no virus on my computer after using various softwares. What I have noticed also is that - button F1 works as button Number 1 - button F5 works as button Number 5 - button F10 works as button Number 9 Is there any way to stop the malfunctioning of the keyboard?