I have been recently infected with hacktool rootkit and tried to remove it and i'm not sure it was fully cleaned. Anyway, after I restarted my computer one time, I wasn't able to get back on the internet. When I opened IE, it would always say res://C:\WINDOWS\system32\xpsp3res.dll/dnserror.htm . I even tried Firefox, but still the same thing.
Anyone know how to solve this? Please help.