When Windows boots up, a lot of things happen, including the loading of a lot of processes and applications. If any of these processes get stuck, Windows will either fail to load or load very slowly.
If the Control Panel and the System Configuration tool are something you use frequently then how about adding the latter to the former? By tweaking the Windows Registry, you can add the System ...
Very old versions of Windows had a utility called Wincfg that allowed users to make advanced configuration changes to system files that affected boot options and system settings. More recent versions ...