From the maker of ComboFix, and posted at BleepingComputer:
You should not run ComboFix unless you are specifically asked to by a helper. Also, due to the power of this tool it is strongly advised that you do not attempt to act upon any of the information displayed by ComboFix without supervision from someone who has been properly trained. If you do so, it may lead to problems with the normal functionality of your computer.
The virus has probably corrupted some of your files or there are pieces of the virus remaining. Might be a good idea to try running a scan with a bootable AV Rescue disk to verify that all of it is indeed gone.
Free Bootable AntiVirus Rescue CDs Download List
(Kaspersky has been known to cause problems in the past, if they have remedied this, I do not know, so you may wish to try one of the other disks)
After scanning, you should run a SFC to try to restore the integrity of the files.
SFC /SCANNOW Command - System File Checker
Cheers all for advice. Took it in to shop for fix, the external hard drive was knackered so had to get a new one, all remnants of virus scraped and registry cleaned. Solved.
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