A couple days ago on my netbook, malwarebytes free picked up the pum. security block malware. after removing it with the software, i have encounted several problems double clicking files or shortcuts opens a settings menu the symbol keys are not working choosing safe mode when booting the pc causes the blue screen of death I have a couple registry back ups, from ccleaner 3.27, but nothing later than the nineth of this month and the most recent system restore point is The net book in question is running windows xp (service pack 3) thanks for the help in advance