I wanted to make the steps before posting, but I cant run the avg and the others as you see.
It all worked ok, until I downloaded a 900K file called f-15 eagle..... and after that, no cccleaner, no avg, no hijackthis.
I really dont get it. I guess its a virus, maybe a very old one (file seems like an old file)
appreciate any suggestions,
EDIT: I have windows XP.