Microsoft denies 'black screen of death' plaguing Windows 7

Microsoft said it could find no evidence that recent security updates were causing problems with its new Windows 7 operating system, which some have dubbed the "black screen of death".

The problem, which has caused users to see a completely black screen after logging on, was identified by British software security firm Prevx last week, and received widespread attention after a report by the BBC yesterday.

Prevx had claimed that changes to Microsoft's operating system's registry - the database that stored configuration settings - were the most likely cause of the error, but Microsoft denied that.

Microsoft has investigated reports that its November security updates made changes to permissions in the registry that are resulting in system issues for some customers. The company has found those reports to be inaccurate and our comprehensive investigation has shown that none of the recently released updates are related to the behaviour described in the reports.

Microsoft's support teams were not seeing this as a big issue for users, but urged Microsoft customers to contact support for free assistance in the event of problems.

Blue screen to black screen, I think they will be re-organizing the team for Windows 8 already.