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Unable to install any antivirus program on my computer

This is a discussion on Unable to install any antivirus program on my computer within the General Computer Security forums, part of the Tech Support Forum category. I have a newer HP laptop running Windows Vista (purchased 9/09). Recently, I decided to remove the factory-installed Norton 360


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Old 03-01-2010, 08:28 PM   #1
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I have a newer HP laptop running Windows Vista (purchased 9/09). Recently, I decided to remove the factory-installed Norton 360 and replace it with something I liked much better (Kaspersky). I've done this numerous times with other computers running the same OS with no problems.

Norton uninstalled cleanly as far as I could tell. HOWEVER, when I installed the new antivirus program, upon re-start, the computer would not boot up fully - I could get to the user icon, but past that the desktop would not open - only a black screen. I was able to run Task Manager, get to the control panel from there, and uninstall Kaspersky, after which the computer promptly returned to normal, the display came back, etc. I then decided to try three other anti-virus programs, one at a time - TrendMicro, Avast, AVG. None of those programs would allow the computer to run either - I got the same black screen each time. And as soon as I uninstalled them, it would return to normal.

I did make sure that I wasn't running more than one anti-virus at the same time - I checked for a clean uninstall on each program. I also made sure to disable Windows Firewall & Windows Defender, as I know these can interfere with Kaspersky somewhat. I also made sure Windows updates were current, and that virus scans were up to date and clean.

Has anyone else ever encountered a problem like this? Could it be that Norton still has files lurking in the system that I can't find, disabling any new anti-virus program?

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Old 03-01-2010, 10:04 PM   #2
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Hi, yes, it's possible. Run the Norton Removal Tool first..

1. Download this file:

ftp://ftp.symantec.com/public/englis...moval_Tool.exe

Save the file to the Windows desktop.

2. On the Windows desktop, double-click the Norton Removal Tool icon.

3. Follow the on-screen instructions. Your computer may be restarted more than once, and you may be asked to repeat some steps after the computer restarts.



Now try installing a new AV.
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