Sony is recalling about 233,000 VAIO laptops in the U.S. and more than 500,000 worldwide because they can overheat and pose a burn hazard.

Thirty complaints of overheated computers that resulted in deformed keyboards and casings have been reported. No injuries have been reported.

The affected models are in series VPCF11 and VPCCW2 and were featured in a variety of colors. They were sold at Best Buy, Costco, Frys, Amazon.com and Sony Style retail stores and sonystyle.com, among other retailers, and shipped between January and April 2010.

The purchase price was between $800 and $1,500.

The overheating is caused by the computers’ internal temperature-management system that malfunctions.

Information on how to remedy the problem, which requires a firmware update, is posted on Sony’s website. Consumers can also call Sony for more information at (866) 496-7669.