The antivirus not opening is suggestive that there could be some active
infection preventing it from working. This isn't an uncommon virus tactic.
Microsoft Antispyware is not an antivirus.
Do you keep the machine up to date with security patches, at least the
monthly critical ones?
I'm wondering whether you've run the Malicious Software Removal tool on a
regular basis:
http://www.microsoft.com/security/malwareremove/default.mspx
You might also consider downloading and running McAfee's Stinger antivirus
standalone tool:
http://vil.nai.com/vil/stinger/
(download the .exe version and run it.)
It is also a good idea to restart Windows in safe mode, and do antivirus
scanning in that mode. I believe this is possible with Stinger, not certain
about the Malicious Software Removal tool.
I'd like to get you to a point where Norton is operable. Unfortunately,
Norton's consumer-grade apps can be quite difficult to handle when things
have gone wrong--and sometimes they go wrong without any help from the
malware writers, so I'm not certain what's at fault here, at the moment.
Another way to proceed--and perhaps a quicker way to get your situation
resolved--would be to go to a third-party forum, such as one of these:
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Appendix 2. Forums where you can get expert advice for Hijack This! logs.
NOTE: Registration is REQUIRED before posting a log
NOTE: Web sites NOT listed in any particular order
http://aumha.net/viewforum.php?f=30
http://www.bleepingcomputer.com/forums/forum22.html
http://www.dslreports.com/forum/security
http://castlecops.com/forum67.html
http://www.wilderssecurity.com/forumdisplay.php?f=24
http://www.cybertechhelp.com/forums/forumdisplay.php?f=25
http://www.geekstogo.com/forum/Malware_Removal_HiJackThis_Logs_Go_Her...
http://gladiator-antivirus.com/forum/index.php?showforum=170
http://forum.iamnotageek.com/f-130.html
http://forums.maddoktor2.com/index.php?showforum=17
http://www.spywarewarrior.com/viewforum.php?f=5
http://forums.spywareinfo.com/index.php?showforum=18
http://forums.techguy.org/f54-s.html
http://forums.tomcoyote.org/index.php?showforum=27
http://forums.subratam.org/index.php?showforum=7
http://boards.cexx.org/viewforum.php?f=1
http://www.malwarebytes.biz/forums/index.php?showforum=5
--
Download and run the HijackThis application, and post the log at the forum
of your choice from this list--or others as well. It's best not to post the
log here--we're not well set up for that function.
Someone experienced at interpreting the logs should be able to guide you
through removal of anything that shouldn't be there--be it spyware or virus.
Once your machine is clean of anything in the malware line, you can look at
what needs to be done to get Norton functional again.
Whatever route you decide to take, let us know here what happens in the end,
if possible?
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