So I managed to get some sort of virus after trying to install what I thought was a codec for windows media player, what's really annoying is I scanned the file with Avast and it said no threat detected... anyway, so I got infected and started noticing my computer doing some weird things. Every time I used the internet it would flag up with a bazillion avast notices, that would try and block any webpage I was on.
I used some of my own initiative and downloaded a bunch of antivirus / anti malware programs. Think I have killed off the infection but my computer is still bugged.
3 major problems I've run into are,
1) Can't get windows defender to turn on at all, when I go to services it just says , WinDefend and in the description, <failed to read Description. Error CodeL 5>, when I try and start the service it says, 'Windows could not start the WinDefend service on Local Computer. Error 5: Access is denied.
2) Trying to run the sfc /scannow through cmd I get to 91% and the scan stops and says, 'Windows Resource Protection could not preform the requested operation'
3) Whenever I try to download a file through chrome or IE I get a message that says the file contained a virus and was stopped. So yeah, basically I can't download anything through these two browsers.
I imagine I need to re install windows, but before I do that I wanted to see if anyone can offer their help or expert advice in helping fix my problems. Whatever help you can give at this point I would be extremely grateful for.