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Don’t be too harsh on me, Bob3160 
I’m as unexperienced as you can never imagine 
But at least I’m trying so hard to learn every day 
You know, I’m thinking of seeking help from a professional right now to come and look at my laptop 'cause whatever I try, I can never be 100% sure…
I tried to FOLLOW the insructions of Tech but actually I have to check ever1 second term in google/wiki before I do sth. For example, I didn’t know what Boot scan is 8) And I’m afraid I might do sth harmful to my PC with the scanty knowledge of mine :-\
And this scan is the first step…
The other tools, well, I installed some of them, eg AVG scanner found a tracking cookie(later I searched & found that this cookie is from the company itself ??? Terminator & AVG Rootkit won’t start. Then I’m WORRIED about HijackThis, Secunia, etc, because they are meant for ppl with ADVANCED knowledge. You know what mine is already…
I really wanna try on my own but perhaps it’s better to play it safe and have a professional see my PC.
I’ll do the Boot scan now though 
Angie20 