COM Surrogate High Memory Usage

Hello

I'm running Windows 8 64 bit.

Internet Explorer 10 - I do NOT have update KB2670838

I also use Google chrome but still have same issue

My computer began running slowly a couple of days ago. I have Norton Internet security which indicated high COM Surrogate usage, it also has blocked several attacks including Trojan.Poweliks and Trojan,Adclicker

Norton Internet Security states that virus was 

c:windows/syswow/dllhost.exe

I have been forced to use Task Manager to End Task for COM Surrogate - however it continues to run several processes of COM Surrogate.

I ran the following to check for viruses /malware

 - Norton Internet Security - none found

- malwarebytes - some malware found and removed

- Spybot malware + virus found alot of malware and the following virus xtlkdjy.sys

It said it removed successfully.

- I ran "sfc/scannow" - the result stated some issues were not able to resolved

- I ran Kapersky root checker - did not find anything

I fear there is a trojan virus that remains undetected.

Thank you