Change system default settings, accelerate system start and shutdown speed, these are always the issues that Windows users love to talk about, especially in Windows XP system, as system is very mature and of comparative long life, users have studies intensively. And there are really many methods to accelerate startup and shutdown speed. It is not long before Windows 7 is released, so comparatively, there are fewer methods to accelerate startup and shutdown for it, and they are very simple.
 Accelerate startup speed
In Windows 7 start menu, type “msconfig” to “Search programs and files”, press Enter to open “System configuration” window, switch to “Boot” label, on the right bottom part of the opened window, change the default value “30” of “Timeout” to smaller number, and change the text to 5.
After modification, when Windows 7 starts up, the default 30 seconds’ waiting time would be shortened to 5 seconds.
Accelerate shutdown speed:
Windows 7 has no setup option directly to change shutdown speed, users need to change registry to realize the function.
Run REGEDIT, take turns to expand to the branch HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control, on the right side pane, find out and double click “WaitToKillServiceTimeout”, on the popup window,  the default value is “12000”, which means shutdown waiting time is “12” seconds. You can enter your ideal number according to your o