After a moment of stupidity, when I accidentally double clicked a file which I know I should have simply deleted but curiosity got the better of me, something nasty has gone on to block almost everything on my PC from working.
It disabled Windows defender, adjusted group policy to prevent pretty much all security actions and even prevented running new .exe files (for instance attempting to install new security software via a flash drive).
Examples of issues are:
1. I have no network connection. The Network Adapter seems to be completely blocked from working - Airplane mode cannot be turned off. Clicking the switch has no effect as it goes off for a split second then returns to 'Airplane mode' on it's own. There is no network symbol in the system tray - it has disappeared. There is a blank page in the Control Panel Adapter settings page. All hot keys do nothing.
2. Most security settings will not work. Defender was blocked by 'Group policy' but I managed to find the registry key for it and turned it back on after running Rkill. Defender carried out a full scan but not found anything untoward.
3. Audio settings are inhibited. The little speaker icon in the system tray has a red cross next to it. Not able to get it to work despite many different routes and attempts. clicking it starts the troubleshooter which finds nothing and offers no further assistance.
Going back through what occurred on the day (last Friday - the 13th..), it appears that Anonymizer Gadget (I can see a folder was created for it) and ProxyGate version 220.127.116.116 (seen in Programs and Features list but won't uninstall) both seem dubious and were installed on that day.
I managed to get Rkill to run finally (after downloading on another PC) as all .exe files we also inhibited for a day or so on the problem PC.
Malwarebytes wont run. 2 messages pop up.
A= An initial message about it cannot run or something like that.
B= A second message box with the following; 'An error has occurred in the program during initialization. If this problem continues, please contact your system administrator. Error code 0x80070426'
Revo uninstaller (free) cant see anything untoward.
Revo uninstaller cant see them.
I've searched a number of forums, this one included, listing many different solutions but nothing seems to work.
All assistance greatly appreciated.
Edited by hamluis, 16 January 2017 - 09:53 AM.
Moved from W10 Spt to Am I Infected - Hamluis.