screen freezing

[maggiemay48]

Can someone help me?Before i throw this computer threw the window!!!!! Its slow.it keeps freezing.saying not responding.I think its full of viruses.What can i do i have run some scans on it but it keeps on doing it.
thanks

 

[Deviousmind]

Update your anti virus and run it then follow the steps of what to do in the security forum under the sticky