Windows 7 was optimized to dramatically reduce the start-up time compared to its predecessor, and Microsoft is hard at work to boost boot performance even more with Windows 8.
It’s somewhat a common piece of criticism to call Windows bloated, including in reference to the start-up process, and all the services launched by the operating system.
On the newly launched ‘Building Windows 8’ blog, some users reignited the issue, pointing out that there are services loaded at boot for no reason at all.
Windows 8 Services Loading During Boot Have to Justify Their Existence - Softpedia