Q&A for How to Reinstall Windows 7 Without CD

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How do I reinstall Windows 7?

Community Answer

Follow the instructions listed in the article above.

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If I have a firmware problem, will reinstalling help?

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Sometimes, but not always. It may be more useful to contact your manufacturer for help.

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What is a product key? How we can find it?

Community Answer

The product key is specific to your copy of Windows to prevent software piracy. It can often be found on the computer's case or the sleeve that the CD initially came in.

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Can I reinstall Windows without losing data if I don't have a backup?

Community Answer

Yes, just don't click Delete when you have your partitions (parts 3, 4, and 5) and continue, or try moving your files to a USB or a portable hard disk.

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What should I do if I erased all of my data after forgetting my password and my laptop is now saying "Operating System not found"?

Community Answer

You will have to install Windows 7 again. Assuming you have an install media, you can just reinstall it. If not, borrow someone else's computer and create one.

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How do I install Windows 7 if it's restarting the computer and then restarting the installation?

Community Answer

If you've already reinstalled Windows 7 and it's still trying to make you install it, make sure you remove the USB drive or DVD from your computer and boot from the hard drive instead.

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If I install a different copy of Windows 7 (with a different product key), will the computer have two versions of Windows then?

Community Answer

No, it will overwrite the previous version of Windows 7 if you install it on the same partition.

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I have the product key on the back of my laptop. Why doesn't Windows recognize it when I try to verify it?

Community Answer

You can only download Windows with a product key if the system originally came from a disk. Your copy of Windows was preinstalled, so you can't do that. You'll need to borrow someone else's key for the download. However, actually activating the system should be doable with your key.

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Question

I have 3 Win7 boxes. I have a Win7 DVD for 1. The others (HP & Gateway) have a mfg installed Win7 in BIOS mode. How do I convert them to Win7 installed in UEFI mode so I can use GPT disks?

Arrogance

Top Answerer

Windows 7 does not officially support switching an installation from Legacy to UEFI mode. It is not necessary to do so to read GPT disks. Windows 7 can read and write GPT partitions even in legacy mode. It just can't boot from them.

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