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Windows-10 Upgrade without an Existing Booting Operating System

I have a windows-7 platform here which is bluescreening on boot.

I intend to upgrade it to windows-10.

If I boot with a windows-10 ISO, will it be able to upgrade it by detecting the existing Windows-7 or does the upgrade has to be started from within Windows-7, ie meaning I first have to fix Windows-7 to have it boot up and then upgrade?

Is there any way around fixing the Windows-7 and still be able to do a gratis upgrade?
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Cliff Galiher
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Fix the cause of the Bluescreen first. once that is done you can try the upgrade from within your installed OS.

If the cause of the Bluescreen is hardware, you probably wouldn't be able install Windows 10 anyway, and it wouldn't make sense.
post the minidump  here, then we can help you out
find it in windows\minidumps
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Paul Daws

I'm not sure if this can be done in safe mode with networking. If your machine is stable in this mode and the upgrade can still be applied whilst running in safe mode then this may be a quick way to upgrade. If you don't know you get into safe mode by pressing F8 after POST.
madorian, plse post the dmp file and respond  to the posts
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I know how to fix the problem, but I figured I didn't have to.

I'll accept the first answer, which says I have to run it from a running Windows-system, even though I don't like the solution;)
It's probably doable, but maybe not without as much hacking as required to just fix the bootup. Thanks.