Used my DC31 the other day until the battery died. Fully charged the battery and now it's not working at all. Are there any little things that I could be missing that will allow the vacuum to not run? It's only about 6 months old so I can't see it being broken or anything.

Nothing springs to mind other than to check the connections between the battery and charger / machine. It's probably be worth a call to the Dyson helpdesk as they will no doubt have a list of things to try when it won't turn on. Sorry I can't be of much help this time!