Run Windows in SAFE mode and try again
there are now 2 files called susp irp mj create and another called Image Path.
I can't repair or quarantine them.
since it gives you the name of the trojan try and do a search for and manually delete file. Try the link below it is a stand alone checker from Kaspersky the best home virus software available. All you do is run it and clean, it will remove itsslf once finished and then reboot, hopefully this will help.
Did you try in safe mode yet many anti virus succeed in safe mode with things they cant remove normally
The files have mysteriously disappeared.
Is Kapersrsky better than McAfee? If so I might try it as it's provided free by Barclays Bank.