After that I thought that the problem was fixed so I tried installing AVG Free but at the very end of the installation it said that it couldn't start some .dll. So I searched again and saw that this could be caused by a rootkit, and so I downloaded and ran ComboFix by renaming it and found more problems. After that I ran numerous tools recommended by topics in this site such as OTS and RootRepeal but I am not sure if the problem is fixed. I have included the logs (numbered by run order) of all the scans I did except the first Malwarebytes Anti-Malware one in this topic.
Please help, otherwise I'm thinking I'm gonna have to ask my family member to see if I could reformat in order to completely obliterate this rootkit.
PS: I should add that after running most of these tools, the task manager option in the task bar is now lit up. However, I cannot run Internet Explorer as it is marked for illegal activity or something like that unless I run it as administrator. I haven't tried booting in safe mode.
Edited by nimchip, 15 March 2010 - 01:03 PM.