When i was surfing the net suddenly everything stopped responding and an error ‘Explorer has experienced a problem and needs to be closed’ occured. and oh yes before that DEP (Data Execution Prevention) stopped another explorer.exe from launching itself. A fter that Dr watson postmortem debugger sprung up and everything came to a standstill. when i ended that process, things went back to normal… Could you please explain that whether its a virus or a bug? :-[ :-[ :-[ :-[ :-[ :‘( :’( :‘( :’( :‘( :’(
Is it a rootkit?
Try a boot time scan with avast and see what it might find.