As the others have said, you have too many anti-virus type programs on your system. If you're concerned about security which you seem to be, then make sure you are using multiple layers of protection.
The first and most important thing you can do is to make sure you run as a standard user. When something requests administrator privileges, you will be shown the Over The Shoulder elevation dialogue which would require you to enter the credentials of the administrator account to continue. Though, malware has the opportunity of gaining administrator rights by compromising an elevated process. All though, this is pretty difficult to do.
If you want to be sure that malware is unable to gain administrator rights by compromising an elevated process, you would have to use a dedicated administrator account for anything that requires elevation. This is the most secure configuration. It's entirely up to you how you configure your system though. More information about this can be found
here and
here.
With UAC enabled, you also get the advantage of Internet Explorer running in Protected Mode. Internet Explorer by default runs as a low integrity process with only write access to a few specific locations which will significantly reduce the threat of malware. You can read more about this
here. Once again, if you're elevating as well as carrying out your every day tasks like for example, browsing the internet, running games, writing word documents etc there is a potential avenue of attack which you can read more about
here. If you prefer to use Mozilla Firefox though, similar functionality can be achieved but it takes an extra 5 minutes or so. Take a look through this thread
here or jump straight to this post
here - It's just all the information compiled. Though, I obviously take no credit for it, it was
eXor that kindly took the time out to go through it with me.
Regarding an anti-virus program. You can choose an anti-virus program from the
*** The Official OcUK Anti-Virus Program Thread***. I would recommend Eset NOD32 if you're willing to pay for one. The detection rates are pretty good and it is also very light on resources. If you would like a free one though, then either Avast or Avira will be absolutely fine. You could also download a program called
Malwarebytes to check any malware that is on the machine.
Moving onto a firewall. The Windows firewall is perfectly fine. It can monitor inbound as well as outbound traffic. Inbound is enabled by default as well as outbound for services which will restrict any unnecessary traffic. If you wish to further that for applications, you will need to manually make some adjustments. Simply type "wf.msc" (without the quotes) into the start menu search bar which will launch the Windows Firewall advanced properties. After you have enabled the monitoring of outbound traffic, you will need to setup exceptions for any programs that require internet access. Though, this isn't really necessary.
The above along with password protecting your accounts, keeping all your software up to date which
Secunia can help you with and along with education, leaves your system in a pretty secure state.
.