THIS IS TESTED 100%
NOTE : Make sure that your priority your CD/DVD rom boot in your bios.
Okay Lets START !
1. Click install for your window 7.
2. Choose Custom(Advance).
3. Make drive C: and D: partition capacity.
4. Then next after making capacity drives.
Fast install is like this.
5. Hold shift + F10
6. Type taskmgr and hit ENTER.
7. Go to Processes tab.
8. And right click the setup.exe .
9. Choose Set priority and high.
10. Click Change priority.
11. Choose the other one setup.exe and set again to high.
12. And Done ! Now exit the task manager and cmd.
Leave your comment if you are done ! ! !
THANK YOU !