I have run every "anti-anything" to try to solve this. I have a laptop running Windows 7 Ultimate and for a while, about 5-10 minutes after booting a scan begins. I can see the HD running non-stop. During this, the laptop is unusable.
Today, it started freezing with no HD light. It took almost an hour of rebooting to get it running. During the day, the scanning has happened 4 times. It is driving me crazy and I have checked everything I can think of. I have no scheduled scans of any kind set up in my anti-virus and anti-malware software.
As an example of a symptom, if I'm watching a YouTube video, it starts with the video and sound going out of sync. The HD starts running constantly. If I close Firefox, it will take a while to close but the sound from the video keeps playing for several minutes. If I pull up task manager, it will show Firefox as still running but there is no window. I end the task and again it takes several minutes to drop from the task manager window.
Any suggestions as where to start to solve this before I check into a mental health facility?
PS I have two other drives (One with XP and one with Vista) that if substituted for the above drive run just fine. I'm at my wits end. HELP