Sony has just issued an urgent BIOS update for certain F and C series VAIO notebooks. The affected models were sold in the first half of 2010 and are at risk of overheating due to a faulty thermal management system. According to Sony, the BIOS update should fix the issue. More than half a million units worldwide are affected, of which 120,000 are in Southeast Asia.

More than half a million VAIO notebooks are at risk of overheating due to a faulty thermal management system, according to Sony. A product recall was previously issued but Sony now says that a BIOS update will fix the problem. The affected parts have serial numbers starting with VPCF11 or VPCCW2 and were sold in the first half of 2010.

535,000 notebooks are affected worldwide, about half of which are in the US. Of the remainder, 103,000 are in Europe, 120,000 are in Southeast Asia and 52,000 are in Japan. The number of overheating cases reported so far is said to be between 30 and 40. No injuries have occured, but the notebooks can get hot enough to warp the plastic casing and cause burns.

To check if your Sony notebook is affected, refer to Sony's support website. Sony advises owners of affected notebooks to cease all usage until the fix has been applied.

This is hardly the first notebook recall in recent years, though recalls are more often due to notebook batteries. In 2008, Sony recalled 73,000 VAIO notebooks due to a similar overheating issue. Sony was forced to recall over 4 million notebook batteries back in 2006 after a notebook battery exploded in Japan.

Sources: Sony, Sony Asia, Daily Mail, PC World