Disable Boot Virus Detection

Having the Boot Virus Detection enabled is pretty much obsolete with the newer machines. This is due to more modern virus styles and the fact that most Motherboards now days can detect any attempts to write to the boot sector or the partition table.

Disabling this feature in the "Advanced BIOS Features" section of the BIOS will improve your boot speed.

shutdown ur pc faster or slower
if u want to shutdown ur pc faster or slower:

1- start-->run-->regedit
when u start run and then write regedit

2- +HKEY_LOCAL_MACHINE
+SYSTEM
+CurrentControlSet
Control

left kick on control and u will find WaitToKillServiceTimeout.
dobbel kick on WaitToKillServiceTimeout.
in WaitToKillServiceTimeout its 20000 it means 20 secunds...if u want to shudown windos faster then get the numbers smaller, like 10000 or 5000 (10 sec or 5 sec) or if u want to shutdown longer writ 50000 (50sec)