Hello and thanks for your help in advance, A few days ago, I got difficulties with: streaming videos, chrome would randomly download files and in general I could not download any virus removal tools. When downloading a virus removal tool, Chrome would give the following error message: Failed - Network error. Videos would stream sometimes but in general videos would stutter a lot or would not load at all. After this I executed my virus scanner(McAfee) and found several trojans present in my system. I tried to remove the virusses with my virus scanner however it was not succesfull and the problems described above remained. Ran the Kaspersky Rescue disk afterwards, found several trojans remaining. However the problems still persisted and decided to execute factory reset and format the entire system. I formatted the entire laptop without any internet connected, just to be sure. Started the system a new, installed a new virus scanner(Kaspersky) by CD, no internet used. Ran a scan of the system and no threats remained. After this I went on the internet(no internet was connected before this), downloaded Chrome and as a test I tried to download Malware bytes with Chrome. Bad luck: still have the error: Failed - Network error. I was wondering if there still is some virus remaining(stealth rootkit maybe?). I ran the Far Bar recovery scan tool and the results I will paste below. FYI: I have an ASUS ROG G751JY-T7234H, which runs windows 8.1. Sorry for the long story, hope the context helps to solve the problem. TL;DR: Chrome network errors persist after full system format, rescue disk and new virus scanner.