The computing market was the worst performing sector of the group with sales down 17 percent compared to this time last year. DSG also said that sales in the business PC market were "significantly lower".
The company claimed its store renovation scheme impacted sales.
"We remain cautious about the economic outlook. However, we are making good progress on our renewal and transformation plan to deliver an unbeatable combination of value, choice and service for our customers," said John Browett, group chief executive.
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See also: PC World owner's 10 percent sales slump