I have a computer that has a ASUS NF7-S mother board with an Atholon 2500+ processor. I thought my hard drive died so I replaced it with a paralel drive and purchased Windows 7. Windows 7 required more memory so I bought 2, 1 gig memory sticks. Everything worked well for a couple of weeks and last night while running the computer speaker produced a siren like sound so I shut the computer down using Windows shut down process. I tried to boot the computer today and I get a CPU error, "CPU is unworkable or has been changed." I pressed F1 to continue and the computer booted up into Windows. I now have a window that says "AMD Atholon device driver installed sucessfully" and another window that says I need to reboot my computer to complete the installation. Does any of this sound right? Could this be some strange virus? I'm running the newest Nortons.