I have a desktop XP. It was working perfectly until last night. I ran malwarebyte and found three trojans and two registry keys. Earlier the same day I ran malwarebyte. It was a good health bill. All the trojans were associated with ccleaner 3.3. I removed those and it worked for a while then it started to behave uncontrollable. If I click on firefox shortcut, or any other application or a file it opens dozens of instances each in its own window. I restored an image I created a few month ago when the PC was working perfectly well. The computer worked well for a short while then the keyboard stopped working. I bought a new keyboard, the same stanza. Any suggestion what that could be?