Thanks to JSntgRvr my earlier problem was solved successfully and completely:
I have a different problem now. I'm sure my PC was attacked by Elex Hijacker and it probably made some damage already.
I wasn't logged in into Google Account for a long time, i logged in today, after solving the first issue. I loggged into my Google Account (Firefox, Chrome) to change security settings. Everything was fine until i ran Malwarebytes scan, then the Elex Hijacker was found, but i thought it was put to quarantine. The same thing happened about 2 years ago, i had the same problem, but it was put into quarantine successfully. Now it's back, it sticked to Chrome/Firefox like a glue.
I restarted my PC because i had some pending Windows updates, but after reboot i saw that they haven't been installed (i tried few times). Something was clearly wrong, i tried to run system scan (Bitdefender), but it was unsuccessful ("Starting System scan failed"). I should turned off infected PC, but no, i tried to write a post here and things went south. In my stupidity i ignored pop-up message informing me about "incorrect page certificate". It was too late after that.
When i realized what happened i disconnected internet by pulling out R-45 jack and managed to make FRST logs. I realize that i should wait for instructions, but i hope it will be useful anyway. I saw in "downloads" a file named "epic setup.exe". I launched it and my computer exploded... Just joking:-> The full name of this file is: "Epic Privacy Browser Installer Setup" and the digital signature is "hidden reflex". I know i should delete it, but it would be against the rules, so i left it alone without starting it:-)
EDIT: No, i can't attach FRST on the second computer, it may be infected by old old flash plug-in. Complete disaster:/
EDIT #2: ...and yet it worked, files are attached.
Edited by Lemur80, 10 June 2018 - 02:13 AM.