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I have a MSDN Subscription and downloaded Windows 8.1 RTM today.

It fails to install.

After mounting the ISO and installing (with a Windows 8.1 Pro product code), selecting "Keep my apps and settings", it copies all installation files, restarts and then bluescreens at around 50%, then rolls back to the previous version.

System has 64 GB Memory, Supermicro, Xeon E5-1650, Intel SSD, runs Hyper-V, Windows 8 Pro.

What may be causing this and how do I fix it?

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Is there an error message displayed when it blue screens and what is it doing just before it blue screens (if it actually tells you what it is doing at that point)? – Richard Sep 10 '13 at 8:27
As I said, it was installing, at around 50%, then a bluescreen appeared for a short while,displaying the error message in the header, then restarted – vzczc Sep 10 '13 at 10:06
upload the dmp file of the BSOD – magicandre1981 Sep 10 '13 at 17:21
The strange this is that no new DMP files are found (only old ones from a few months back) – vzczc Sep 11 '13 at 7:13
check if you have enough disk space available. the 4gb that microsoft tells you need is a lie. If you are on the edge (let's say you have 8 free, i recommend to go with more than 10gb) – Bart Calixto Sep 13 '13 at 2:59

Disable Windows Firewall and then try to install Windows 8.1. Details are here:


Boot the computer in Clean Boot and try to install Windows 8.1:


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