Upgrade windows 7 service pack 1 to service pack 2.
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Click on the start button and type Registry Editor (regedit).
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HKEY_LOCAL_MACHINE
- >> System
- >> CurrentControlSet
- >> Control
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>> Windows then double click on CSDVershion or right click and select Modify
2. In the data value rectangle, you will found the number 100, that means this is a Service Pack1, you need to change the number from 100 to 200 to upgrade the windows to SP2. then click OK.
3. The last step, Restart your pc. then the pc will be upgraded to Windows Service Pack 2.
* NOTE:
In the data value rectangle, The numbers mean:
- 100 To Service Pack1.
- 200 To Service Pack2.
- 300 To Service Pack 3.