Temporary ban
The problems affect Sony's lithium-ion batteries which are used in millions of computers worldwide. Analysts have speculated that the problems could cost Sony $500m (£260m) to replace faulty batteries.
The problems led to some airlines temporarily banning the use of certain laptops on aeroplanes.
Sony apologised for the problems, which prompted a cut in its profit forecast for 2006.
Consumers may be persuaded to switch brands because of the reported problems, according to a recent report by analysts IDC.
Fifteen percent of corporate buyers and consumers survey said the reported problems had caused them to alter their buying plans.
