Thanks for replies.
To be honest i dont use any antivirus right now. I hate software that tries to protect you by being smart ass (You might know what i am talking about). I used passive on-demand antiviruses, latest to be bitdefender. Even that one didnt make it, but lasted longest of all . Not much of them left for trying.
But back to the topic:
From what i have learned and what happened last week i think there is a big mess in DLLs. Good cleanup solved one problem with NVidia drivers earlier on. As soon as i am done with this, will post back...
No reinstall till new processor, mb, ram will make it on my budget and that could take weeks (very long ones ). Reinstall is pain in the ass even with nlite.
If anybody finds solution earlier than me, feel free to post it here