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I tried installing Ubuntu x64. I mounted the .iso file using daemon tools, and copied its contents on my USB. I already configured BIOS to boot from USB.

I found wubi.exe in that mounted .iso file. I ran it and it installed Ubuntu, then it said, I must reboot. I selected reboot now options. When it boots, it says no wubildr, then it says completing the ubuntu installation (or something like that) and some stuff. if I press ESC It goes to black screen, and nothing happens.

I have :
HP pavilion G7 1303
CPU: 64 bit CPU
GRAPHIC CARD: AMD Radeon HD 7450M, 1 GB Memory

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Can you still boot to Windows OS. Then follow this Wubi Wiki –  atenz Aug 1 '12 at 7:25
    
If you were to install Ubuntu to a partition on your HDD, you will not use the WUBI installer but the Ubuntu ISO installer which is to be burned on a CD or install on a USB. It is not enough that you copy contents of the .iso file to a USB. You may have to clarify your question in order for people to help you. Do you want to install Ubuntu inside Windows (WUBI)? Or you want to install it in another partition (dual boot)? –  Peachy Aug 1 '12 at 7:27
    
Check this guide on how to run Ubuntu installer from the USB. ubuntu.com/download/help/create-a-usb-stick-on-windows –  Dan Aug 1 '12 at 7:40
    
To fix no wubildr, just copy wubildr to the root of your first partition. –  Mitch Aug 1 '12 at 7:52
    
@mitch But... where is that partition? –  Matej Kranjec Aug 1 '12 at 8:04
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1 Answer 1

There is problem with Grub loader and you have overwritten Grub on windows boot loader first you have to fix mbr in windows.

You can do this with the windows installation disk. After booting Disk choose repair option

Select Cmd then type the following commands

bootrec/fixmbr
bootrec/fixboot

Then Reboot

This will remove grub loader and let you run windows.

First delete ubuntu partitiion you created.

For dual boot system first create partition using disk management utility. You can find it by right click on my computer > manage> disk management from left panel.

Make bootable media of Ubuntu

In Ubuntu installation you have to install root system in the blank partition you created, once done you then reboot

You will now have the options for choosing system (Ubuntu or Windows)

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