Microsoft is investigating the mounting reports that Windows 7 is having a negative effect on laptop batteries.
Users on Microsoft forums have been complaining that after installing Windows 7, their battery life has decreased significantly and in some cases is suggesting they actually replace their battery.
Threads relating to the issue have been active since before Windows 7 went to general release. Folks running the Windows 7 RC began posting in June 2009 and the threads are still active today.
ComputerWorld cites a Microsoft spokesperson who yesterday said the company was investigating the issue. "We are investigating this issue in conjunction with our hardware partners, which appears to be related to system firmware (BIOS)," the spokesperson said, referring to the firmware that boots the PC and initializes the hardware components. "The warning received in Windows 7 uses firmware information to determine if battery replacement is needed."
Worryingly, there seems to be a sizable number of forum posters who believe Windows 7 has permanently damaged their battery. They claim to have tried reverting to XP or Vista or charging their battery in another OS or when their machine is off but report no improvement.