Virus infection-help

[SPEED94]

Hello,
my system has become affected with viruses and it is not even letting the antivirus installer to run properly.Can anyone guide me to an onlinefree virus scan and fix system so that I can install the antivirus.

 

[Dark Lord of Tech]

http/www.superantispyware.com/portablescannerhome.html

 

[Dark Lord of Tech]

http/www.eset.com/us/online-scanner/

 

[Dark Lord of Tech]

http/www.bitdefender.com/scanner/online/free.html