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Okay, so I've been trying to Dual Boot My computer. I already installed Windows 7, and now i want to install Ubuntu, but when i load to the disk, goes the purple screen, i select the language, and then install ubuntu, after this is the problem. It either goes a black screen with flashing cusor for awhile before freezing, or goes the ubuntu loading screen the freezes after awhile. Now I've tried making a new disc and partions, and still have the samething happening. I've recently built this computer, it has i5 processor, 8gb ram, and a TB hard drive. So if any suggesting would be very helpful, because i've read every thing my CompTIA book has to offer, muiltiple thread, and nothing i've tried has worked.

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As user139428 asked: What type of computer is it? Have you disable the UEFI firmware and fast boot? – Eliah Kagan Mar 21 '13 at 2:21
I built the computer – user141856 Mar 21 '13 at 14:14
What motherboard does it have? Have you tried disabling UEFI firmware and fast boot? Are you able to do so? – Eliah Kagan Mar 21 '13 at 14:16
ASrock b75 pro3-m and no i can not – user141856 Mar 22 '13 at 0:00

When you say 'disk', are you referring to a manufactured installation CD that you ordered online or purchased at a store, or a CD you made yourself by downloading an iso and burning it to the disk? If the latter is true, you may have gotten a bad download (as uncommon as it seems, trust me, it happens to all of us).

In addition to this, I generally recommend against using physical disks when installing Ubuntu (I have had some mess-ups when doing so myself); I have found one of the most reliable tool to use when installing more widely used distros (like Ubuntu & Mint) is Linux Live USB (Or LiLi, for short; link). It puts the image onto a flash drive, as opposed to a disk, so any 1GB flash drive will generally do. All of this, of course, is optional, and CDs may work fine for you, so I advise to redownload the iso before trying it on a flash drive.

To check for iso file corruption, as well, you can use md5sum. I would just google it, as it's a bit easier to explain without words.

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I've created two discs, and tried a flash drive and same issue – user141856 Mar 20 '13 at 12:33
So tried the md5sum, and the file is fine – user141856 Mar 20 '13 at 22:31

I had the same issues as well, when I did this, but eventually found this page: WindowsDualBoot: I hope it helps you, as it helped me greatly.

I also used a USB and when I tried installing it via restart it wouldn't work, however, I went into it the USB's files in windows, found the installer, and used it that way, and installed it on my pre-prepared linux partition.

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I've looked at that page, but can you explain more on that second part? – user141856 Mar 21 '13 at 14:13
I opened the USB via My Computer < The drive the USB was in (which was my E) and found the wubi installer and installed it what way. – Justice2497 Mar 24 '13 at 19:15

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