[Fix] Slow Startup of Windows 7 on Intel Nehalem-EX CPU based PC

Apparently, some Windows 7 and or Windows Server 2008 R2 users on a Intel Nehalem-EX CPU based computer are facing terribly slow startup times. The problem is reportedly seen more on the computer that has CPU has four or more sockets.

Intel 8-core Nehalem-EX processor

Intel 8-core Nehalem-EX processor

According to Microsoft, the issue occurs because Windows does not use the broadcast method to send an interprocessor interrupt (IPI) during startup. Hence the processor goes in a Deep C3 state and may take lot of time to startup, it is frustrating experience, especially because a typical Nehalem-EX processor boasts 8 cores, no one expects slow startups.

A hotfix is available for free download from Microsoft website, but since it is fix to specific users, you need to request Microsoft to provide the fix by providing your email ID.


Kiran Kumar

Hi there! Kiran Kumar is an Engineer by profession, and loves blogging primarily on Microsoft Windows operating system and also enjoys reviewing software and products. Currently, he is exploring Windows 10 and you will see a lot of articles on know-how about it. When he is not writing for TWP, he enjoys time with his Family, listens to lot of music, enjoys Biking, and occasionally plays racing games on Xbox One.