In Windows Vista, you can speed up the boot time by requiring the processor to boot using 2 processor. This is provided you are using Dual Core or Core 2 CPU.
To change the setting, type msconfig under the start search panel.

Once you have launched msconfig.exe, select <Boot> tab

Click <Advanced options…>

In the panel, top left corner, it shows number of CPU with a 1 in the list box. Change it to 2.

You need to restart the PC.
Posted by technozeal