How to install service pack1 in windows7 in hindi.

Hii guyzz!!
this is my first video i will show you how to install service pack into your device.
1)click on "Start" button.
2)Than type 'run' in search box.
3)And type "regedit" in the run box.
4)Click on HKEY_LOCAL_MACHINE" folder.
5)Click on "SYSTEM" folder.
6) click on "Current control set" folder.
7)Find windows and Click on "'Windows" folder.
8)On your right hand side u can see something has pop up.
9)Find "CSDV Version" and right click on it.
10)In the value data have to enter the value acording to this
11)For service pack 1 = 100
12)For service pack 2 = 200
13)For service pack 3 = 300

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