Your system probably has some damaged files. To resolve this, run a full CHKDSK:

Click on Start > All Programs > Accessories
Right-click on the Command Prompt entry and select 'Run as Administrator'.


Accept the UAC prompt, after which the Command Prompt window should display.
At the Command prompt, type:
CHKDSK C: /R
and press Enter. You will be told that the drive is locked and CHKDSK will run at the next boot. Press Y, then reboot.
CHKDSK could take a few hours to run, depending on the size of the drive, so don't just sit there waiting for it for finish any time soon! During the process it may find & repair some damaged files (good).
After CHKDSK has finished, Windows should boot normally.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]

Hi Macropod,

Thanks for the valuable advice.

It happened again.

After applying your idea, the computer was given enough time to repair the errors, then it was rebooted.

The aggressive message disappeared for a short while then it appeared.


Any other ideas would be appreciated.

Kind regards.