Windows X's Live recommends:
Before and after making any changes to your system: Check Windows for registry errors.
TuneUp Utilities: Clean up your PC and improve your PCs performance - Try now for free!

It starts to become suspicious. Already a first web page apparently inadvertently published on Microsoft TechNet suggested issuing a Release Candidate version of Windows 7 for the month of May 2009. This page has finally been withdrawn. A similar leak was detected by Ars Technica.

The time for putting it online, a page on the website Microsoft Partner Program has leaked the availability of Windows 7 RC for 5 May 2009. On this page become a ghost, it was mentioned that the TechNet and MSDN subscribers were able to download the RC. An option at all from that date of 5 May 2009, and thus pass the confirmation of availability for all users.

Ars Technica also highlights the information gleaned by some readers through Microsoft Online Concierge Chat. The RC version of Windows 7 have already been sent to Microsoft OEM partners such as Siemens and Dell, the Texas manufacturer that had already expressed his enthusiasm at the end of testing with the beta.