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I used to have linux mint 15 , ubuntu, and windows 7 dualbooted on my samsung E300.

I did so using the following video:

Afterwards, after installing an audio through hdmi thing, a bug was coming in my terminal. So I went to windows and deleted all the tiny partitions. the only remaining things were system, C disk and D disk.

After rebooting, I get the following error:

Error: no such partition.
Grub rescue>_

How can I boot into windows and more importantly, how can I fix this?

Thanks in advance.

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Boot from the Windows 7 CD/DVD you have and choose the repair option when asked. No problems will be found, but when asked select 'command prompt' and then enter the following

bootrec/fixmbr bootrec/fixboot

Give your machine a reboot and hey presto, you're back to booting straight into Windows without GRUB.

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