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I had Windows 7 installed previously on my PC, but I mistakenly had compressed my boot files so I had to install a new OS. Since I didn't have the Windows install, I went a head and installed Ubuntu 12.04, hoping to install windows later.

Anyway, when I've got a Win 7 CD I tried to boot from it but it didn't work(the computer booted in Ubuntu). Later I tried removing Ubuntu from my PC by using the Ubuntu CD, but even after I removed it, the Win 7 CD didn't work.

I wondered whether there was something wrong with the Win 7 CD. However it proved wrong as the CD worked when I opened it in Ubuntu using Wine loader. I tried to install it through that window (which may seem to you as stupid, but heaven knows I had no choice).

Unfortunately, it didn't work either. Then I tried partitioning the Hard drive through my Ubuntu CD, but it didn't work and I don't understand it well as I'm new to Linux. Do I have to partition my Hard Disk? If so, how? Or else, Is there any other way to do this?

I'd be very grateful if you could help me. I like Ubuntu in many ways, but still I have a number of problems when coping with my day-to-day work in Ubuntu.

Waiting for your answers with fingers crossed!

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Do you have your BIOS set to boot from CD? – Mitch Sep 2 '12 at 11:54
You need to reinstall Windows, then install Ubuntu. Try this guide, it's basically a duplicate of your issue. To get started installing Windows, you need a Windows disc and you need to set your BIOS to boot from that disc. – Tom Brossman Sep 2 '12 at 11:55
First configure BIOS to check for CD as first boot device. You can access to that settings by pressing F12 or F2 or Del key depending on BIOS maker. Then boot Windows CD and install and then install Ubuntu. – Anwar Shah Sep 2 '12 at 11:59
Please indicate your Boot-Info URL, so that we know your exact situation. – LovinBuntu Sep 3 '12 at 7:54

I have a number of problems when coping with my day-to-day work

Perhaps you should first try to get help for your other problems, and then had no need to install Windows anymore. What are your problems with the every-day work in Ubuntu?

Anyway, if you definitely want Windows, you should find out how to boot the CD. Normally, you should see some popup when booting that says " Boot selection" or similar, where key is F2, F8, F11, F12 or something else. Try that one and then select your CD-/DVD-Drive in the next dialogue.

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