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i havent the mentioned thread resolved option there.

its everything ok.
What about this tool? will open new thread also so it will not be hidden here.
https://www.bleachbit.org/
Is there a solved-button. or only ok icon?

all of them on your list
AVG Antivirus Free(replacement for MS Security essentials) maybe better using Internet Security Trial(but i hate them nerving me constantly to buy )
Malwarebytes...

AVG and ADWCLEANER?

despite gone winlogon-problem i will run memtest86(3x) and hdd diagnostic tool.
in my opinion it was caused due to AVG-problems or and adwcleaner. had other problems earlier with adwcleaner which...

I installed Recovery console on HDD and bypassed PW. working.
And Winlogon-problem seems gone.
Will run memtest86 anyway and hdd diagnostic tool.
maybe cleaning memory-contacts from time to time...

solution?
http://www.tomshardware.co.uk/forum/114985-45-recovery-console-asks-password

From a tip here
https://forums.whatthetech.com/index.php?showtopic=95574&PageSpeed=noscript

its about the winlogin.exe-problem which then also needs memtest86 running and HDD-diagnostic-tool....