Here's my sad story. We got new computers that operate on Windows Vista. The free security expired, so I went to download the Cox security suite that comes with our internet subscription. Through that program, Norton was uninstalled, and the new suite was installed. I do run AVG, but wanted the firewall protection. It said we couldn't have both avg and their antivirus, and my assumption was that by not clicking the virus box, that portion of the suite wouldn't be downloaded. (This may not be the issue at all...)
The computer restarted and all seemed to be well, so I started the same procedure on our 2nd computer.
Then, the computer commenced to crash. The blue screen message (what I could see of it) is: driver_irql_not_less_or_equal
Once I saw what was happening, I tried to unistall the suite from the 2nd computer, but too late. It went into the blue screen, constant restart mode.
Both computers continue to restart continually, and are not functional. Help!