system
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My laptop has been running a little dodgily(?) lately, so I decided to run a virus scan. In normal mode the scan stops at 25.1gb, no matter how long I leave it (up to 12 hours), I ran the scan in safe mode and it ran perfectly well but brought up no infected files.
Any suggestions?
Thank you 
Follow this guide and attach logs: http://forum.avast.com/index.php?topic=53253.0
A malware remover will help you when done. 
Also do you remember where it appears to stall ?
Sorry I meant the file/folder name