My computer is running so slow... I believe it has some sort of virus. What anti-virus would you highly recommend??
What anti-virus program do you have installed?
Have you tried running that program in Safe Mode?
Try Avast Free Antivirus ver 5.0.5.
Besides a bad case of malware (virus/trojan/spyware/rootkit) another things that could cause a computer to run slow is overheating.
When was the last time you cleaned out your case?
I use the free version of Avira and I am very happy with it.
You may also want to run Malwarebytes to catch any spyware.
If you do have spyware Spybot Search and Destroy is still a great program. When installing I do not turn on the resident protection as I find it a bit intrusive. Just leave the Tea Timer and resident protection unchecked.
Also CCleaner is a very useful program.
Last try a good old fashioned defrag. I like this better than the one in Windows. It is also free as are all these programs.