Before any work can be done on this machine, there is something that requires your immediate intervention.
This machine is messed up pretty badly because you have several anti-virus programs (McAfee & Symantec) on your machine. That's not a good idea!!
Alike firewalls, anti-virus programs have conflicts co-existing with each other & produces undesirable results. Please
uninstall ALL leaving only one of them.
ALL the antivirus programs
must be removed via add/remove program.
For any program that doesn't have an add/remove entry, you will have to do this:
re-install the program -> reboot -> uninstall
Post a fresh HJT log when you have completed the above task.
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