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So I boot up my computer after installing Ubuntu 13.04. Grub correctly shows me all available boot options and I am able to boot to Ubuntu. However, when I try to boot into Windows 7, grub hangs at a purple screen.

I have an HP laptop. It came with all four primary partitions taken up by the Windows bootloader, the actual Windows partition, one called HP_TOOLS, and another for HP Restore. I was able to back up and delete HP_TOOLS and the recovery partition, and change my disk type from Dynamic to Basic (GParted doesn't recognize Dynamic drives). I then booted into a live session of Ubuntu and made two partitions with GParted: one large partition for storage space that I could use between the two operating systems (sda4), and another extended partition (sda3) which contained Ubuntu (sda6) and it's swap space (sda5).

It currently looks like this:

partitions

I'm not sure if the second paragraph is actually relevant, I just want you to know all the variables in the equation.

Thank you in advance for helping this poor noob.

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You could try using Boot Repair which is explained pretty well in the thread Lucio mentioned. Alternatively since you are having trouble accessing the windows partition you could try a boot repair from a windows rescue CD but then you should be prepared for GRUB repair after that. –  DrA7 Jul 9 '13 at 7:00
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@DrA7 I used Boot Repair as you suggested and now grub loads Windows fine. However, Windows is stuck on the "Starting Windows" screen. –  whowantsakookie Jul 9 '13 at 14:04
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That means that Ubuntu and GRUB are fine. The problem is your Windows partitions. –  Lucio Jul 9 '13 at 15:32
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The problem was that I had tried Boot Repair before, but when it asked me if it could delete one of the partitions, I said no and nothing happened. This time however, I said yes. Problem solved. –  whowantsakookie Jul 9 '13 at 18:19
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You should create a new answer, telling how did you solve the problem, and mark it as accepted. So this question remains as answered. Thanks! –  Lucio Jul 11 '13 at 3:16
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up vote 1 down vote accepted

You could try using Boot Repair which is explained pretty well in this thread.

If you are also having trouble accessing the windows partition you could try a boot repair from a Windows Rescue CD.

After using a Windows Rescue CD you will in all likelihood need to use Boot Repair to restore a GRUB menu.

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+1 good answer, I have a question, does "Windows Rescue CD" image available for download anywhere? (My Sony VAIO had preinstalled Win8, and there is no CD. The laptop vendor had provided 4 recovery disks, which I lost.) I have even put a thread for bounty, see if you can help me. –  iammilind Aug 10 '13 at 14:06
    
A quick google query lead me to this though I can not vouch for the sites legality nor quality. –  DrA7 Aug 10 '13 at 14:24
    
But I am anyway getting the recovery environment without this CD/DVD. With which we can perform repair or open command prompt (though everything I have tried and no luck). Do you think inserting a CD/DVD for repairing will add value? If yes, then I will give it a try. –  iammilind Aug 10 '13 at 15:12
    
I do not know if there is any difference between the CD or the on-drive recovery, wouldn't hurt to try though. –  DrA7 Aug 10 '13 at 15:18
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