Microsoft has recently announced that the company's engineers have been closely analyzing that complaints of very low battery life for some laptops running on the Windows 7 operating system, and it has been discovered that the problem is not with the OS but with the machines.

As has been shared by the company in a February 08 post on the firm's official blog, through a new feature, Windows 7 has been correctly able to evaluate that it is the battery of the users that is failing. But some of these users have all new batteries, which is raising further questions.

"Every single indication we have regarding the reports we’ve seen are simply Windows 7 reporting the state of the battery using this new feature and we’re simply seeing batteries that are not performing above the designated threshold", Microsoft wrote in the post.

The investigation, however, is still on and laptop firms and Microsoft are trying to uncover the exact source of the problem. "Some of our customers running Windows 7 have reported different battery run times depending on their model, usage, PC settings and more. We are working with Microsoft to investigate this", said a Lenovo spokesperson.