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I searched all over the Internet but there are no solution to my problem, whatever I add, grub menu doesn't show up, I did a grub update but it doesn't detect windows, I don't know what to do, I have to log on Windows 7.

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Just because you say Grub menu does not show up. Did you try to press and hold the left Shift key while booting? – Takkat Feb 21 '12 at 19:29
up vote 2 down vote accepted

IF you have ur windows 7 DVD, boot into recovery and open command prompt

type in

bootrec /fixmbr


bootrec /fixboot

now reboot and insert ur ubuntu live cd and in terminal type

sudo update-grub

this should fix it

for more info on the bootrec tol visit

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I don't have one, but I think no one can't stop me with a USB, is there a special disk for recovery of W7?. Thank you anyways it is the solution at the end. – Nick Oh Feb 21 '12 at 19:10
yeah usb works use a tool called unetbootin... – sarveshlad Feb 21 '12 at 19:29
@SarveshLad - I have removed the link - whilst you put the warning, such links are not allowed on this site. thanks. – fossfreedom Feb 21 '12 at 19:44
@fossfreedom I had my doubts ..... thanks .. sorry for breaking the rule.... – sarveshlad Feb 21 '12 at 19:47

Unetbootin isn't very user-friendly. I'd suggest Linux Live USB creator, which I think is

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