Just got my laptop back from my computer guru, after getting repeated blue screens with driver power state (something like that) error messages. He ran AVG and Malwarebyte scans and picked up a dozen viruses. I keep Norton (Internet Security) updated religiously, Norton loads on start-up and I recently ran a thorough scan, and nothing but cookies showed up! I really don't want to go to AVG, but this cost me $175, and I can't afford it when I'm already paying for protection via Norton. What gives? What to do? System is HP laptop, 64-bit Vista, IE9. Internet modem is secured with password.